Search

Severe climatic changes led to the spread of pathogens, which made the global food security problem, and agricultural crops are damaged by fungi. In the current study, the novelty was the synthesis of bimetallic zinc oxide-copper oxide nanoparticles (ZnO-CuO NPs) by gamma rays and Gum Arabic for controlling potato post-harvest tuber rots as safe, and new protectant. High-resolution transmission electron microscope (HR-TEM) indicated that, ZnO-CuO NPs were semi-spherical and their sizes ranged from 8.5 nm to 70.0 nm, with an average diameter of 22.27 ± 1.6 nm. ZnO-CuO NPs displayed a fungicidal effect against Alternaria solani (A. solani) when used at levels greater than 31.25 µg/mL. When tubers were treated with ZnO-CuO NPs and infected with A. solani, it was demonstrated that they function as a coating layer on the surface of the tubers. As a consequence, there was no rot that could be seen for up to 21 days. Infected tubers lost the most weight (57.03%) after 21 days of storage, followed by infected tubers treated with ZnO-CuO NPs by 10.29%, uninfected tubers treated with ZnO-CuO NPs (2.35%), and uninfected tubers treated with ZnO-CuO NPs coming in third (0.36%). Intriguingly, at 21 days, treated infected tubers showed a substantial decline in α-amylase and cellulase (0.1618, and 0.230 U ml−1, respectively). In addition, the healthy untreated tubers had levels of α-amylase and cellulase that were significantly lower than those of the uninfected tubers treated one at 21 days, reaching 0.124 U ml−1 and 0.144 U ml−1, respectively. The present method appears to be original in its use of disease prevention for potato tubers as a practical strategy for maintaining quality and extending storage shelf life. [ABSTRACT FROM AUTHOR]

Mango powders were supplemented with probiotics and then subjected to heat pump drying. The study evaluated the physicochemical, biochemical, and probiotic properties of the resulting mango powders. Through the effects of thickening additives type (sodium alginate and Arabic gum), concentration and drying temperature have been shown to have a direct effect on the objective functions of interest. The results showed that the foam stability increased approximately 2.14 times (MPD‐S), the solubility of powders tended to be similar to 67.65 ± 0.40%, while microbial density decreased and remained within the allowable limit of 6.9 × 106 CFU/mL (MPD‐G). Through heat pump drying, these values were drastically reduced. The mango powders were mixed for a second time to improve the organoleptic values and showed commercial viability with a score greater than 11.2. [ABSTRACT FROM AUTHOR]

Coating materials and fluctuations in inlet temperature are crucial components of the encapsulation process, with both factors affecting the physical, chemical, and functional qualities. Therefore, this study aimed to determine the optimal properties of Jack Bean tempeh hydrolyzate using maltodextrin and Gum Arabic coating materials at a specific spray drying temperature. The experimental method consisted of 80% (w/w) maltodextrin, 20% (w/w) Gum Arabic, and a combination of both, with variations in inlet temperature at 140°C, 150°C, and 160°C. The results showed that 20% Gum Arabic treatment at a spray drying temperature of 150°C produced the best hydrolyzate characteristics of Jack Bean tempeh. Based on the SEM analysis, the morphology of the hydrolyzate particle had a spherical and wrinkled shape. Additionally, FTIR results showed no significant structural difference between the sample treatment and the uncoated control. [ABSTRACT FROM AUTHOR]

Chadian Gum Arabic is an essential export commodity with significant potential for international trade, improving living conditions for Sahelian populations in various sectors. However, there is a lack of examination of its potential impact factors of sustainability in regional and international contexts from a dynamic perspective. This paper aims to address this gap by using regional data from 1997 to 2021 of Chadian Gum Arabic international trade and applying the augmented gravity model. The analyses demonstrate that the multiple regression model explains a 15% variance in trade value, accounting for all the predictors input into the model. Although this explains a relatively small portion of the variation, the ANOVA summary for regression model exhibits high significance ( α = 0.05), with GDP and border contributing significantly to trade value in the multivariate analysis of variance model. To verify the robustness and accuracy of the results, we used Bonferroni as a baseline and conducted MANOVA. The model was first checked using the box test of equality (Mauchly's test of sphericity), which significantly increased the rejection rate. This was confirmed by tests of within-subjects effects on the Huynh–Feldt, which had a significance level of 0.0002. The results highlight the significant contributing factors in Gum Arabic sales, emphasizing the need for policymakers to adapt strategies to promote economic growth. [ABSTRACT FROM AUTHOR]

The oil palm tree (Elaeis guineensis) is potentially being exploited in the pharmaceutical and nutraceutical industries due to the significant bioactive potential of its leaf bioflavonoids. However, these phytocompounds are prone to degradation when exposed to excessive heat, light, and oxygen, making it essential to implement a protective mechanism for their stabilization. This research aimed to optimize the conditions for microencapsulation of oil palm leaf extract (OPLE) using spray drying technology. A single-factor experimental design was used to examine important parameters such as extract-to-wall material ratio, pH value, inlet air temperature and feed flow rate. Natural polymers such as gum Arabic (GA), maltodextrin (MD), modified starch (MS), β-cyclodextrin (BCD), and their combinations were used as encapsulating agents. The novelty of the study lies in the successful optimization of spray drying conditions that yielded high retention of bioactive compounds. Specifically, OPLE microcapsules prepared with maltodextrin at a feed flow rate of 30%, an inlet air temperature of 180 °C, an extract-to-wall material ratio of 30:70, and a pH of 7 retained 77.18% of total flavonoid content, 81.52% of total phenolic content, and demonstrated 82.22% DPPH radical inhibition. These optimized microcapsules exhibited desirable properties, including satisfactory bulk density, low moisture content, high solubility, and low hygroscopicity. Furthermore, the microcapsules demonstrated no cytotoxicity on Hs27 human skin fibroblast cell lines at a concentration of 10 mg/mL and revealed promising anti-inflammatory activity, surpassing the efficacy of a commercially available drug. These findings provide a novel foundation for the development of high-value active ingredients for nutraceuticals, with significant potential for industrial applications. Highlights: Spray drying microencapsulation preserves bioflavonoids from oil palm leaves. Optimized OPLE microcapsules used maltodextrin at 180 °C, 30% flow, 30:70 ratio, pH 7. OPLE microcapsules retained 81.52% phenolics, 77.18% flavonoids, and 82.22% DPPH inhibition. [ABSTRACT FROM AUTHOR]

AbstractThis article focuses on the production of an herbal drink containing the mixture of basil extract and lemon juice (65:35 (% v/v)), at inlet air temperature (IAT) (110–190 °C) as well as the concentrations of maltodextrin (MD, 0–7.5%) and gum Arabic (GA, 0–7.5%). Response surface methodology (RSM) was employed to investigate the variation of spray-dried powder attributes including moisture content (MC), water activity, water solubility, product yield, particle size, total monomeric anthocyanins (TMA), and aroma components. The optimum conditions for maximizing encapsulation efficiency and powder yield were IAT of 146 °C, 9.68% MD, and 5.32% GA. Both IAT and MD/GA ratio had a significant effect on final powder properties except for water activity. The GC-MS data revealed that the predominant aroma components in the final powder, lemon juice, and the reconstituted product were limonene and γ-terpinene; limonene; γ-terpinene, linalool, and 1.8 cineole, respectively. The results demonstrated that spray drying (SD) using GA/MD blends improved the consolidation of bioactive compounds in powdered form. [ABSTRACT FROM AUTHOR]

Robust adhesion is crucial for ionic hydrogels in flexible electronic pressure and strain sensors. Herein, we design a transparent and strong adhesion electronic pressure and strain sensor based on a multifunctional ionic hydrogel with double network using polyacrylamide (PAM) and gum arabic (GA). First, the effect of ionic type on the mechanical properties of hydrogels was measured. The GA/PAM–Fe3+ hydrogel with high extensibility (1835%) and toughness 1. 47 MJ / m 3 was selected as the best sensor material. Moreover, the GA/PAM–Fe3+ hydrogel has good adhesion property with various substrates, and the maximum peel strength of the hydrogel to skin could reach up to 123.9 N/m. Furthermore, the resistance of GA/PAM–Fe3+ hydrogel is sensitive to a wide strain window and the gauge factor shows stable and reliable change during deformation. Due to its compliant and excellent adhesive properties, strain sensors based on this hydrogel can be well fixed on the epidermis without adhesive tape, and can perceive large and gentle body movements. These characteristics demonstrate that GA/PAM–Fe3+ hydrogel is promising for a broad range of practical applications in wearable sensors. [ABSTRACT FROM AUTHOR]

A novel, natural, eco-friendly, solid-state Acacia gum nanocomposite electrolyte has been prepared with different weight ratios of nanoparticle ZrO 2 introduced to the standard composition of 70% Acacia gum and 30% ZnSO 4 ·7H 2 O. Sequential examinations, encompassing XRD, and FTIR, were conducted to evaluate the amorphous characteristics, complexation nature, and interaction of dopant nanoparticles within the acacia-salt electrolyte matrix network. The optimum ionic conductivity of nanocomposite electrolytes was found using electrochemical impedance analysis. The remarkable ionic conductivity was achieved for the electrolyte sample consisting of 10% nanoparticle ZrO 2 introduced to the standard composition of 70% of Acacia gum and 30% of ZnSO 4 ·7H 2 O(AZR4) at 100 °C, 6.1×10−3S/cm, at room temperature (RT) the electrolyte sample exhibited conductivity value of 1.13×10−3 S/cm. Additionally, an examination of the dielectric characteristics dependent on frequency demonstrated the existence of space charge polarization in the electrolyte and a notable tail in the low-frequency area. Through the parameters of the dielectric modulus, the research also investigated the hopping mechanism and relaxation time. Furthermore, nano-composite electrolytes were employed in the construction of solar cell devices. The outstanding results were obtained for electrolyte upon (10 wt%) nanoparticle-introduced, overall power conversion efficiency (ƞ) reached 5.38%, short-circuit photocurrent density (J sc) 10.92 mA/cm2, open-circuit voltage (V oc) at 735 mV, and fill factor (FF) at 0.63. • Acacia gum nanocomposite electrolytes has been prepared. • Structural characterization investigated by XRD, and FTIR. • The conductivity of 1.13 × 10−3 S/cm at RT. • DSSC device fabricated, maximum (ƞ) 5.38%. [ABSTRACT FROM AUTHOR]

ABSTRACT In this research, the emulsification method was used to encapsulate Lactobacillus reuteri in microparticles of whey protein concentrate (WPC) at different levels (1%, 2%, and 4%) and gum Arabic (GA) at three levels (0/5%, 1%, and 1/5%) and a constant level of sunflower oil (5%). The results showed that emulsions with higher quantities of wall materials exhibited better encapsulation efficiency (67%/57%) and preservation ability at different temperatures, different pH, and presence of 1% bile salt. During the storage time, the droplet size of the emulsion increased more than two times (from 2.2 to 4.6 μm) and the absolute zeta potential of the optimal emulsion decreased (from −19/63 to −16/76 mV). Encapsulating Lactobacillus reuteri in the stabilized emulsion with the highest concentration of wall material improved the cells' protection during storage. The study also observed a decline in the number of primary encapsulated live cells in the gastrointestinal tract (from 4/32 to 3/58 Log CFU/mL) after 90 days of storage. In the case of the nonencapsulated sample, the initial live population decreased from 2.8 to 1 Log CFU/mL after 90 days of storage. The electron microscope images showed that the emulsions became unstable after 30, 60, and 90 days of storage, but the microbial cells were still visible in the continuous phase. Overall, encapsulating Lactobacillus reuteri using emulsification technique can preserve the probiotics during storage and “in vitro” gastrointestinal digestion. [ABSTRACT FROM AUTHOR]

In an attempt to expand the utility of natural compounds in catalysis, a novel heterogeneous catalyst derived from Gum Arabic, a natural polysaccharide, was synthesized by its modification with chlorosulfuric acid and subsequent magnetization. Material characterization confirmed the successful modification and magnetization of GA. Hammet method also approved increase of acidity of gum upon functionalization with chlorosulfuric acid. According to Response Surface Methodology optimization, this catalyst exhibited high activity for the conversion of fructose to 5-hydroxymethylfurfural under mild conditions, achieving a 96% yield at 85 °C within 73 min using 30 wt% catalyst loading. The kinetic study indicated an activation energy of 89 kJ/mol. Thermodynamic parameters were determined, with enthalpy, entropy, and Gibbs free energy values of 86.11 kJ/mol, − 29.45 J/mol, and 96.65 kJ/mol, respectively. Furthermore, the catalyst displayed excellent recyclability, retaining over 87% activity for five consecutive cycles, and a heterogenous nature as confirmed by hot filtration test. This study demonstrates the potential of the as-prepared catalyst for sustainable 5-hydroxymethylfurfural production, highlighting its high activity, recyclability, and environmentally friendly nature. [ABSTRACT FROM AUTHOR]

The article focuses on the development of a sesame oil nanoemulsion encapsulated with maltodextrin and acacia gum using a spray-drying method to enhance its stability and functionality. Topics include the physicochemical properties of the encapsulated nanoemulsion, the high encapsulation efficiency achieved, and the potential applications of this method in the food and pharmaceutical industries.

AbstractThe visible light absorption capabilities, along with its electrical characteristics, of a low-cost, plant-based, biopolymer, gum acacia, have been chemically modified by tailoring its defect concentrations via pH modification, where the acid solvent of fruit (peel) extracts of jamun was used to influence the chemical structure by reactive modification. Ultraviolet-visible and photoluminescence spectroscopy of the gum acacia biopolymer treated with the extracted anthocyanin from jamun peel showed a prominent, characteristic red shift in the visible spectrum range. Impedance spectroscopy analysis showed the occurrence of localized ionic conduction. The bulk conductivity of the modified specimens increased due to the profound release of conducting ions in the water-swollen network. The reactively modified biopolymer could be used in multiple fields of material science, specifically in energy device applications, viz., photovoltaics (PV), by utilizing its cost effectiveness and photolytic effectiveness. 2nd, as a polymer electrolyte and dye-sensitised solar cells (DSSCs) material by utilizing its capacity of gel formation. In our research described in this article, the underlying charge transfer mechanism for such responses was examined after crosslinking in the organic dyes extracted from the peel of jamun fruit with gum acacia. [ABSTRACT FROM AUTHOR]

Novel nanoprism-shaped manganese-doped copper sulfide (Mn–CuS) was fabricated by two-phase colloidal method (Mn percentages = 0%, 1%, 3%, and 5%). The Mn–CuS was analyzed by XRD, FTIR, UV–Vis spectrometer, and TEM. The XRD shows that the hexagonal covellite copper sulfide peaks appeared at 2θ=47.9∘,31.9∘,47.8∘, and 31.8∘ for 0%, 1%, 3%, and 5% respectively, and orthorhombic chalcocite copper sulfide appeared at the peaks that are corresponding the planes (412), (275), (029) and (106). According to UV–Vis analysis, the optical absorption of manganese-doped copper sulfide 0%, 1%, 3%, and 5% clearly appeared in the UV–Vis region at 518, 440, 478, and 477nm respectively, and there are broad peaks for localized surface plasmon resonances (LSPR) of CuS located at 970, 1061, 1002, and 1006nm for Mn–CuS 0%, 1%, 3%, and 5%, respectively. The favored nanoprism-shaped sample (manganese-doped copper sulfide 1%) was coated with gum Arabic (GA) in order to decrease the cytotoxicity and enhance the biocompatibility. The antibacterial activity of manganese-doped copper sulfide and GA@Mn–CuS 1% nanostructure toward Staphylococcus aureus and Escherichia coli bacteria was determined by inhibition zone. It was found that the fabrecated Mn–CuS 1% nanoprisms were more active toward both E. coli and S. aureus bacteria and the doping enhanced the antibacterial activity. [ABSTRACT FROM AUTHOR]

Inhibitory properties of an eco‐friendly composition based on gum arabic polysaccharide and citric acid salt–sodium citrate for corrosion prevention of low‐carbon steel in neutral environment was investigated. Corrosion resistance of low‐carbon steel in a 0.1% NaCl solution with and without composition after 3 and 24 h immersion was investigated by electrochemical and weight loss methods. The inhibitory composition with 0.5 g/L concentration was obtained by adding 0.25 g/L of gum arabic and 0.25 g/L of sodium citrate in 1L 0.1% NaCl solution. It was established that the inhibitory efficiency of the composition is enhanced with increasing concentration (0; 0.25; 0.50; 0.75; 1; 1.50; 2.0 g/L) and reaches a maximum at 2.0 g/L of each component. The protective effect of the composition is determined by the combination of two compounds of different natures, which have hydroxyl and carboxyl functional groups. The inhibitory ability of the composition is due to the dominant competitive adsorption between citrate anions with gum arabic and chloride ions on the steel surface. Adsorption of citrate and gum arabic on the steel surface corresponds to the Frumkin isotherm, and the Gibbs energy value was −12.25 kJ/mol, which indicates physical adsorption. The morphology and chemical content of the steel surface after immersion in a solution with an inhibitory composition were investigated by the scanning electron microscopy (SEM) and EDX analysis. The formation of a protective film based on gum arabic and citrate probably occurs by chelation, which effectively blocks the access of corrosively active Cl− ions. It was shown that the corrosion rate Km was 0.42·10−5 g/cm2·h and the inhibitory efficiency for protection of the steel was 80.4% after 24 h immersion in a 0.1% NaCl solution with composition. [ABSTRACT FROM AUTHOR]

Copyright of Science & Technology of Food Industry is the property of Science & Technology of Food Industry Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Acerola (Malpighia emarginata DC.) is a fruit-bearing shrub notable for its high content of vitamin C and phenolic compounds, contributing to significant health benefits. This study aimed to determine the most suitable spray-drying infeed solution composition concerning the wall materials, core materials and core-to-wall ratio. The inlet and outlet temperatures of the spray-drying process were also investigated. The results showed that the particles had the core in form of water-in-oil-in-water emulsion while the wall solution mixed with maltodextrin and gum arabic (at a ratio of 2 : 1, w/w) and the core-to-wall ratio of 1 : 1.5 (w/w) had better bioactive compounds protection. The inlet and outlet temperatures were determined to be 150 °C and 95 °C, respectively. Spray-dried powders had ideal morphology and low moisture content (3.4 ± 0.0 %), high process yield (85.7 ± 0.1 %) and encapsulation yield of total phenolics content (48.9 ± 1.8 %), total flavonoids content (35.4 ± 2.6 %), and vitamin C content (27.2 ± 0.6 %). [ABSTRACT FROM AUTHOR]

Background: Effective wound dressing is the key solution to combating the increased death rate and prolonged hospital stay common to patients with wounds. Methods: Sodium alginate-based single- and double-layer membranes incorporated with Capparis sepiaria root extract were designed using the solvent-casting method from a combination of polyvinyl alcohol (PVA), Pluronic F127 (PF127), and gum acacia. Results: The successful preparation of the membranes and loading of the extract were confirmed using Fourier transform infrared spectroscopy (FTIR) and X-ray diffraction (XRD). The prepared membranes were biodegradable and non-toxic to human skin cells (HaCaT), with high biocompatibility of 92 to 112% cell viability and good hemocompatibility with absorbance ranging from 0.17 to 0.30. The membrane's highest water vapor transmission rate was 1654.7333 ± 0.736 g/m2/day and the highest % porosity was 76%. The membranes supported cellular adhesion and migration, with the highest closure being 68% after 4 days compared with the commercial wound dressings. This membrane exhibited enhanced antimicrobial activity against the pathogens responsible for wound infections. Conclusions: The distinct features of the membranes make them promising wound dressings for treating infected wounds. [ABSTRACT FROM AUTHOR]

Chronic kidney disease (CKD) poses significant health challenges globally, particularly in regions like the Middle East. This review evaluates the potential efficacy and safety of Gum Arabic (Acacia senegal), a traditional remedy, in managing CKD. A comprehensive literature review was conducted using databases including PubMed and Scopus, focusing on the biochemical, physiological, and therapeutic impacts of Gum Arabic on renal health. Gum Arabic has demonstrated antioxidative and anti-inflammatory properties that may benefit renal function, as shown in animal studies. Clinical trials suggest improvements in renal biomarkers, though these are limited by scope and methodology. While promising, the clinical application of Gum Arabic requires cautious interpretation due to gaps in understanding its mechanisms of action. Gum Arabic shows potential as an adjunct treatment for CKD, reflecting both traditional use and preliminary scientific evidence. Future research should focus on its long-term efficacy, safety, and underlying biochemical pathways to better guide its therapeutic use. [ABSTRACT FROM AUTHOR]

The adoption of environmentally friendly approaches in NPs production represents a pivotal stride towards achieving sustainability in nanotechnology through biomass conversion. Due to their potential for synergy at low concentrations and biological applications, bimetallic nanoparticles have drawn a lot of attention recently. In the current work, Gum Arabic as a biological macromolecules source was used to create bimetallic copper oxide-silver nanoparticles (CuO-Ag NPs) in an economical and environmentally friendly manner. Bimetallic CuO-Ag NPs were successfully synthesized at the nanoscale, showed excellent dispersion, and formed stable colloidal nano-solutions, according to their characterization. Additionally, the antifungal and antibacterial potentials of bimetallic CuO-Ag NPs were assessed in relation to some pathogenic microbes that were isolated from the sides of wounds. Also, growth curve assay had been performed to P. aeruginosa, and S. epidermidis after the treatment by bimetallic CuO-Ag NPs. Finally, antibacterial reaction mechanism had been determined by SEM imaging process. Bimetallic CuO-Ag NPs' minimum inhibitory concentration (MIC) was determined for every tested strain of yeast and bacteria. With inhibition zones of 22 ± 1.80 mm, and 26 ± 1.0 mm (at a concentration of 50 µg/mL), the results showed the antibacterial activity of bimetallic CuO-Ag NPs against P. aeruginosa, and S. epidermis, respectively. In summary, Gum Arabic was effectively used to create bimetallic CuO-ZnO NPs, which demonstrated promising antimicrobial properties, paving the path for their safe implementation in a variety of biomedical applications specially to treat some pathogenic microbes-causing wound infection. [ABSTRACT FROM AUTHOR]

Magnetic fluid hyperthermia, a minimally invasive localized therapy that uses heat generated by magnetic nanoparticles under an AC magnetic field, is a complementary approach for cancer treatment that is excellent due to its advantages of being noninvasive and addressing only the affected region. Still, its use as a stand-alone therapy is hindered by the simultaneous requirement of nanoparticle biocompatibility, good heating efficiency, and physiological safe dose. To overcome these limits, the biocompatible magnetic nanoparticles' heating efficiency must be optimized. Iron oxide nanoparticles are accepted as the more biocompatible magnetic nanoparticles available. Therefore, in this work, superparamagnetic iron oxide nanoparticles were synthesized by a low-cost coprecipitation method and modified with starch and gum to increase their heating efficiency and compatibility with living tissues. Two different reducing agents, sodium hydroxide (NaOH) and ammonium hydroxide (NH4OH), were used to compare their influence. The X-ray diffraction results indicate the formation of a single magnetite/maghemite phase in all cases, with the particle size distribution depending on the coating and reducing agent. Citric acid functionalized water-based ferrofluids were also prepared to study the heating efficiency of the nanoparticles under a magnetic field with a 274 kHz frequency and a 14 kAm−1 amplitude. The samples prepared with NaOH display a higher specific loss power (SLP) compared to the ones prepared with NH4OH. The SLP value of 72 Wg−1 for the magnetic nanoparticles coated with a combination of starch and gum arabic, corresponding to an intrinsic loss power (ILP) of 2.60 nWg−1, indicates that they are potential materials for magnetic hyperthermia therapy. [ABSTRACT FROM AUTHOR]

Calcium tartrate instability in wines has been a neglected topic for many years. However, it seems that this problem is gaining prominence, and the industry welcomes inputs to address this issue. Among the alternatives that winemakers use for tartrate salt stabilization, the addition of authorized protective colloids is one of the best choices because they are easy to apply and have a low energetic cost. In the present study, the same red wine was treated with five different commercially available protective colloids in triplicate. The effectiveness of such colloids on calcium tartrate potential instability was estimated, in addition to their side effects on the phenolic composition of the treated wines and their astringency perception, as assessed by sensory analyses of the treated wine. The results show that, under these trial conditions, carboxymethylcellulose is the best choice for reducing the risk of calcium tartrate precipitation in wine. Moreover, the application of protective colloids to the wines had little effect on their color, phenolic composition, or evolution during one year of bottle storage. Finally, the addition of protective colloids did not impact the astringency intensity, but it influenced the dynamic perception of astringency according to the temporal dominance of sensation analysis. [ABSTRACT FROM AUTHOR]

Enhancing the sensory appeal of jasmine instant tea, particularly its aroma, poses a significant challenge due to the loss of volatile organic compounds during conventional processing. This study introduces a novel approach to address this issue through the application of microencapsulation techniques, aimed at preserving these key aromatic elements. Our investigation focused on the encapsulating agents gelatin, acacia gum, carboxymethylcellulose (CMC), and maltodextrin, chosen for their compatibility with the volatile organic compounds of tea. A statistical analysis was conducted on the analytical results through comprehensive analytical techniques like Principal Component Analysis (PCA), Orthogonal Partial Least Squares Discriminant Analysis (OPLS-DA), and Variable Importance in Projection (VIP) analysis for microcapsule characterization. The statistical analysis revealed gelatin to be a particularly effective encapsulating medium, preserving an aroma profile more akin to fresh tea. The statistical analysis confirmed the reliability of these findings, highlighting the potential of microencapsulation in refining the quality of jasmine instant tea products. The results of this research suggest that microencapsulation could be instrumental in improving the sensory quality and shelf life of instant tea products, offering new opportunities for product enhancement in the beverage industry. [ABSTRACT FROM AUTHOR]

Significance: As an inflammatory and autoimmune skin condition, psoriasis affects 2–3% of people worldwide. Psoriasis requires prolonged treatments with immunosuppressive medications which have severe adverse effects. Esculetin (Esc) is a natural medication that has been utilised to treat psoriasis. Objective: The goal of this work is to improve Esc's solubility by developing novel Esc nanostructured lipid carriers (NLCs) for treating psoriasis and increasing the residence time on the skin which infers better skin absorption Methods: The particle size, zeta potential and entrapment efficiency (EE) of Esc NLCs were assessed. Incorporating NLCs into gum Arabic gel preparation enhances their industrial applicability, absorption and residence time on the skin. Esc NLC gels were evaluated by in vitro release and in vivo effectiveness on a rat model of UV-induced psoriasis. Results: Esc NLCs showed high EE reaching more than 95% and reasonable particle size ranging between (53.86 ± 0.38 to 236.3 ± 0.11 nm) and were spherical. The release study of Esc NLCs gel demonstrated a fast release of Esc denoting enhanced bioavailability. Compared to free Esc, Esc NLCs gel (F2) could considerably lower the level of CD34 and TNF-α in the skin. The results were validated through histopathological analysis. Conclusion: As Esc NLCs gel (F2) has strong anti-inflammatory properties, our results showed that it presented a significant potential for healing psoriasis. [ABSTRACT FROM AUTHOR]

The objective of this research was to create Tolbutamide extended-release (ER) tablets and evaluate their efficacy in comparison to the gold standard, hydrophobic polymer (HPC). The natural polymers that were considered for this study included guar gum, xanthan gum, acacia gum, and fenugreek mucilage. The mechanical characteristics, drug release patterns, and stability under accelerated settings of tablets produced employing direct compression at different polymer concentrations (25%, 50%, and 75%) were studied. With a release rate of 94.5 percent over 24 hours, the optimized formulation (TF6 with 75% Guar gum) offered the best sustained drug release. As for controlled-release qualities, Xanthan gum showed promise with a cumulative release of 93.45% and Acacia gum was dependable, though not quite as efficient. Fenugreek mucilage was not well suited for endotracheal formulations due to its rapid drug release. The optimized formulation (TF6) kept its mechanical integrity, drug content, and constant drug release profile throughout three months at 40°C/75% RH, according to stability testing. This study offers additional evidence that natural polymers, specifically Guar gum can effectively replace synthetic binders in sustained-release formulations. Additional research should explore alternative combinations of these natural binders to enhance formulation efficacy. [ABSTRACT FROM AUTHOR]

This study investigates the impact of Gum Arabic on the geotechnical properties of subgrade soil materials, a non-traditional soil stabilization technique. Given the need for sustainable and locally available alternatives in road construction, the study aims to assess how different percentages of Gum Arabic affect the physical and mechanical behavior of soil. The research aims to provide sustainable and locally available alternatives in road construction. Three soil samples were treated with varying percentages of Gum Arabic, (1.5%, 3%, 6% and 12%), and standard geotechnical tests were conducted under both soaked and unsoaked conditions. The results showed that the average natural moisture content of the soils was 7.9%, 2.2%, and 4.6%. The addition of Gum Arabic increased the peak maximum dry density of the soil samples by 8.02%, 1.88, and 7.88%. The maximum unsoaked California Bearing Ratio (CBR) values of soil samples were 32.1%, 81.7%, and 48.7%, respectively. Whereas, maximum soaked CBR values of soils S1, S2 and S3 obtained at 1.5%, 6% and 1.5% additions of gum Arabic were 8.4%, 28.7% and 16.9% respectively. The study recommends using 3% Gum Arabic to improve the CBR property of soil samples. The application of Gum Arabic showed significant improvements in soil behavior under both soaked and unsoaked conditions.

In the making of emprit ginger extract tempe beverage requires the addition of a stabilizer to increase the stability and viscosity of the product and each stabilizer has a different effect from one another. This study aims to determine the characteristics of gum arabic stabilizer, Carboxymethyl Cellulose (CMC) and soy lecithin in emprit ginger extract tempe beverage used 0%, 0.3%, 0.5%, 0.7%, and 0.9% of each stabilizer. The observations were physical properties such as stability and viscosity and chemical analysis includes protein content, and pH value. This study used completely randomized design (CRD) with two factors (F1 is the type of stabilizer and F2 is the concentration of the stabilizer) and carried out with 3 replications. The obtained data was analyzed with ANOVA followed by Duncan's test. Decision system analysis was performed using the MADM-SAW method to obtain the best type and concentration of stabilizer. CMC was found out in the first rank of used stabilizers in 0.5% concentration with stability in 21%, viscosity was 2.17 poise, an ash content was 0.26%, protein content was 12.77%, and pH value was 6.2.

Gum Arabic is the most important non-wood forest product of Sudan, and therefore use of a sustainable harvesting tool can significantly improve its gum quality. We conducted a study in North and West Kordofan of Sudan to assess the performance, use, and efficiency of the newly designed harvesting tool, and to understand the level of its adoption by the gum Arabic producers. Data were collected through a structured questionnaire, and by group discussion involving 44 trained gum producers by a purposive selection method. Besides, we conducted another field experiment to understand the pattern of gum falling (in and out) of the new harvesting tool during collection. Descriptive statistics were applied using SPSS and Microsoft Excel. The findings of the study showed that 72.7% of respondents were happy while using the new harvesting tool, and 95.5% stated that the tool was well performed. Further, 59.1% of respondents stated that the new harvesting tool is much better than old tools and as many as 61.4% of respondents indicated that the new tool can harvest all gums in a tree. Additionally, 63.6% of the respondents mentioned it was more efficient than the traditional tools. Likewise, 88.6% of respondents stated that the new harvesting tool improved safety. Further, the results indicated a significant correlation (p ≤ 0.01) between nodules fall in harvesting tool and picking time, as well as between picking time and number of branches. The overall results indicated that the new harvesting tool is innovative in terms of ensuring safety, and reducing collection time while improving gum quality. The research recommends the replacement of the traditional tools with this new harvesting tool for sustainable gum Arabic harvesting in Sudan.

Introduction: The Earth's surface is covered by 75% water. However, only 3% of this water is freshwater, and just 1% of that freshwater is accessible for human consumption. In most instances, humans are responsible for introducing pollutants into water. Dyes are among the most significant pollutants found in textile wastewater. As a result of its economic feasibility and high selectivity, adsorption has gained widespread popularity as a technique for treating organic dyes. In this research, a novel magnetic adsorbent was developed and utilized to remove certain toxic dyes. Material and Methods: In this research, Gum Arabic has been utilized as a natural and biodegradable polymer for the preparation of an effective adsorbent. To enhance the surface area, efficiency and stability of this natural polymeric adsorbent, citric acid has been employed as a green crosslinker. According to our findings, ,Gum Arabic has been polymerized for the first time with citric acid as a crosslinker and utilized for the removal of cationic dyes. Additionally, a crosslinked Gum Arabic polymer synthesized using citric acid has been incorporated with magnetite nanoparticles, ensuring its facile recovery from the medium upon application of a magnetic field. Furthermore, the prepared magnetic Gum Arabic was employed for the removal of Crystal Violet (CV), Malachite Green (MG), and Methylene Blue (MB) dyes from aqueous samples. Results and Discussion: In this study, the impact of various parameters, including initial dye solution concentration, solution pH, contact time between the adsorbent and the dye solution, adsorbent dosage, and dye solution temperature, on the removal efficiency of cationic dyes from aqueous samples was investigated. According to the results, the adsorption capacity of the adsorbent (CL-GA/Fe3O4) increased with increasing dye solution concentration, reaching maximum levels of 209.80, 205.12, and 177.12 mg/g for MB, CV, and MG, respectively. Additionally, the removal efficiency for these dyes increased with increasing solution pH, reaching 99.43% (MB), 97.13% (MG), and 96.62% (CV) at a pH of 6. Furthermore, the removal efficiency of dyes increased with increasing adsorption temperature, indicating an endothermic process. It is noteworthy that in this study, both MB and MG dyes reached their maximum removal efficiency after 20 min. In contrast, CV reached its maximum removal efficiency within a 15-min time frame. In this investigation, the Langmuir model showed a significantly better fit to the adsorption data compared to the Freundlich model, indicating its accuracy in describing monolayer adsorption. Additionally, this study revealed that the obtained adsorption kinetic data fit well with the pseudo-second-order model. This suggests that chemisorption likely plays a significant role in the rate-limiting step of the adsorption process. Conclusion: In this research, a novel nano adsorbent (CL-GA/Fe3O4) based on crosslinked Gum Arabic with citric acid and magnetized with Fe3O4 nanoparticles was employed for the removal of cationic dyes. To validate the effectiveness of the (CL-GA/Fe3O4) adsorbent, various characterization techniques, including FT-IR, FESEM, EDX, Zeta potential, and VSM, were employed. The findings of this study demonstrate the development of an innovative and efficient adsorbent for dye removal, which holds significant importance in addressing environmental challenges.

Abstract Emerging contaminants such as ceftriaxone are a significant issue in the environment. They have led to a series of ecological, environmental, and health issues, and it is urgent to find a green and secure method to remove antibiotics from water effectively. In this research, the CuCoFe2O4@Gum Arabic (GA)/Activated Carbon (AC) as an innovative bio-based matrix magnetic nanocatalyst was synthesized for the efficient degradation of ceftriaxone from aqueous media. The structure of CuCoFe2O4@GA/AC was characterized via FESEM, EDS, Mapping, XRD, FTIR, VSM, and DRS analyses. The structural analysis of the catalyst revealed its synthesis at the nanometer scale (40–50 nm), exhibiting high magnetic strength (Ms: 5.38 emu/g) and favorable optical properties with a bandgap of 3.6 eV. Under optimized conditions, including a pH of 5, 60 min of irradiation time, 0.24 g/L photocatalyst dose, and ceftriaxone concentration of 5 mg/L, the removal efficiency from synthetic and real samples was 94.43% and 62.5%, respectively. The photocatalytic degradation process of ceftriaxone followed pseudo-first-order and Langmuir–Hinshelwood kinetic models. Furthermore, analysis of the process mechanism indicated a prominent role of the superoxide radical. The catalyst had a high recovery capability and chemical stability. The photocatalytic degradation of ceftriaxone by CuCoFe2O4@GA/AC showcased remarkable efficiency, indicating its potential utility in the treatment of wastewater contaminated with antibiotics.

The utilization of zein and gum arabic has grown in an attempt to formulate wall materials based on protein–polysaccharide complexes. This mixture provides a versatile delivery system for hydrophilic (guava leaf extract, GLE) or lipophilic (fish oil, FO) bioactive compounds, and it can be used as an edible film-forming polymer. This study was undertaken to characterize FO-containing edible films that were double-layered with a film containing GLE. Modified zein and gum arabic solutions (MG complex) were mixed at a ratio of 1:1.5 (v/v), adjusted to pH 5, added with glycerol (20% of the complex) and FO (5% of the complex), and finally adjusted to pH 5. This was prepared as the bottom/lower layer. The upper/active layer was prepared by mixing MG complex, glycerol, and GLE (1, 3, and 5% w/v of the complex). The total phenolic and flavonoid contents in GLE were 15.81 mg GAE/g extract and 6.99 mg QE/g extract, respectively. The IC50 of the DPPH radical scavenging activity of GLE was 26.86 ppm with antibacterial activity against Bacillus subtilis and Escherichia coli of 9.83 and 12.55 mm. The total plate counts of double-layered films containing GLE were retained below 3 log CFU/g during 28-day storage. The peroxide values of these films were dimmed for no more than 9.08 meq/kg sample on day 28 of storage. Thickness (872.00-971.67 μm), water vapor transmission rate (12.99-17.04 g/m 2/day), tensile strength (1.56-2.02 kPa), elongation at break (61.53-75.41%), glass transition (52.74-57.50°C), melting peak (131.59-142.35°C), inhibition against B. subtilis (33.67-40.58 mm), and inhibition against E. coli (2.05-9.04 mm) were obtained by double-layered films. GLE can be successfully incorporated into the active layer of a double-layer film to improve its characteristics while significantly slowing down the microbial contamination and oxidation rate. MG complex and FO can also contribute to the performance of the edible film.

Cinnamon bark oil (CBO) is a natural plant bioactive molecule with antioxidant and antimicrobial activities because of its chemical instability and poor solubility in water, which limits its industrial applications. Herein, CBO‐loaded Pickering emulsion was produced using zein, the stabilizer, and arabic gum (AG) was used to modify the emulsifying ability of CBO. The stability, chromatic aberration, pH, particle size, polydispersity index (PDI), and zeta (ζ) potential of the CBO‐loaded Pickering emulsion were investigated. The results showed that the Zein‐AG‐CBO Pickering emulsion exhibited better stability at an added AG concentration of 0.8% (w/v) than the free CBO. The CBO‐loaded Pickering emulsion retained its antioxidant and antimicrobial capacity and exhibited higher functional potential than the free CBO. The findings demonstrated the potential of Zein‐0.8%AG‐CBO Pickering emulsion as a kind of promising alternative for the delivery of antimicrobial essential oils in the food, active packaging material, and other related industries. [ABSTRACT FROM AUTHOR]

Copyright of Food Research & Development is the property of Food Research & Development Editorial Department and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Food Research & Development is the property of Food Research & Development Editorial Department and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

In this current study, hydrogels based on acacia gum (AG), polyacrylamide (PAM), and carboxymethyl tamarind kernel gum (CMTKG) were successfully developed and ciprofloxacin (drug) incorporated into it. To optimize the hydrogel, the concentrations of crosslinker and initiator were varied, and their effects on the swelling were examined. The hydrogel was subjected to characterization techniques such as Powder X‐ray Diffraction (PXRD), Scanning Electron Microscopy (SEM), Attenuated Total Reflection‐Fourier Transform Infrared spectroscopy (ATR‐FTIR), and Thermogravimetric analysis (TGA). The hydrogel swelling and in vitro drug release were assessed in pH 1.2 and 7.4 buffer solutions. The findings revealed that an alkaline pH yielded superior results for the swelling and in vitro drug release experiments compared to an acidic pH. The drug release kinetic of the ciprofloxacin‐loaded AG/PAM/CMTKG hydrogel followed the Korsmeyer–Peppas model, demonstrating non‐fickian diffusion at pH 7.4 and fickian mechanism at pH 1.2. The pH‐dependent behavior of ciprofloxacin‐loaded AG/PAM/CMTKG hydrogel displayed its potential implications for site‐specific ciprofloxacin release. [ABSTRACT FROM AUTHOR]

This study explores the synthesis and characterization of superabsorbent hydrogels derived from chemically modified gum Arabic, designed for controlled folic acid release. The synthesis involves a two‐step process: carboxymethylation followed by grafting with 2‐hydroxyethyl methacrylate via gamma irradiation. The resulting hydrogels exhibit enhanced mechanical strength and controlled diffusivity, essential for nutrient delivery systems. Key factors such as copolymer composition and irradiation dose are investigated, affecting the synthesis process. Systematic studies of swelling behaviors reveal that the hydrogel achieves a maximum swelling of 888.1% at 40 °C. The hydrogels are loaded with folic acid, and in vitro, sustained release profiles are examined under various pH conditions. The maximum release of 83.3% is observed after 24 h at pH 7.0, following a Korsmeyer–Peppas release mechanism. Different characterization techniques, confirm the successful synthesis and unique properties of the superabsorbent hydrogels. Rheological behavior analysis, scanning electron microscopy, and biocompatibility assessments provide a comprehensive understanding of the hydrogel structures. Gamma irradiation ensures a homogeneous network structure, crucial for optimal swelling behavior and mechanical properties. This research highlights the potential of eco‐friendly biopolymer hydrogels in precise drug delivery applications, leveraging the safety and process control benefits of gamma irradiation. [ABSTRACT FROM AUTHOR]

In this study, buckwheat flower polysaccharide conjugates (BFPCs) were synthesized and evaluated for their emulsification properties. The stability of BFPC‐stabilized emulsions was assessed through particle size analysis, zeta potential measurements, microscopic observations, and rheological tests. Gum Arabic served as a control to compare BFPC's emulsifying efficacy across varying storage conditions, including exposure to metal ions, pH variations, and different heat treatment temperatures. Results showed that BFPC significantly lowered interfacial tension (16.2 mN/m) and effectively stabilized emulsions containing 60 wt% medium‐chain triglycerides at a concentration of 1.0 wt%. Over a 20‐day storage period, BFPC emulsions demonstrated robust resistance to heat (60–90°C), acidic conditions (pH 2.0–9.0), and ion concentrations (Na+, Ca2+). Moreover, in a high oil phase emulsion, BFPC enhanced the bioavailability of curcumin to 27.05%, markedly higher than the 7.10% observed without emulsification, underscoring its potential in nutrient delivery applications. Practical Application: Due to its excellent resistance, long‐time emulsifying stability under different conditions, and its good effect in curcumin embedding, BFPC has a broad prospect and can be widely used under various conditions in food industry. [ABSTRACT FROM AUTHOR]

Spray-dried yellow cashew juice ingredients produced under different inlet temperatures (140 and 150 °C) and gum arabic (GA) addition ratios (15% and 25% w/v) were evaluated for their physicochemical and phytochemical attributes and storage stability for 56 days. All spray-dried cashew juice particles showed high solids recovery (>70%) and solubility (>90%), low water activity (<0.3), and low hygroscopicity (<10%). Spray-dried particles prepared with 15% w/v GA showed spherical shapes with a semi-crystalline structure and higher ascorbic acid concentration (>650 mg 100 g−1) and total phenolic content (>330 mg GAE 100 g−1). During storage, spray-dried cashew juice particles maintained their water activity levels within the microbiologically safe range and retained high solubility, in addition to high ascorbic (>68%) and phenolic (>55%) acid retention. Overall, we showed that spray-drying cashew juice is a feasible strategy to upcycle abundant and undervalued cashew juice into stable, phytochemical-rich ingredients for multiple applications. [ABSTRACT FROM AUTHOR]

Kinnow mandarin is a perishable fruit that suffers from various post-harvest losses during storage and transportation. To preserve the postharvest quality of fresh fruit, this study investigated the effect of gum Arabic (GA) and essential oils (EO) of lemongrass (1.0%), neem (1.0%), and rosemary (1.0%) on Kinnow fruit. The results revealed that the composite coatings of gum Arabic (10%) and essential oils effectively maintained the titratable acidity, ascorbic acid content, total flavonoid content, and total antioxidant activity. Also, the coated fruit resulted in a reduced loss in weight, decay incidence and maintained higher enzymatic activities of phenylalanine ammonia-lyase (PAL), peroxidase (POD), and catalase in contrast to the uncoated fruit. Additionally, the scanning electron microscopic imageries of the GA + EO treated fruit revealed a smooth surface morphology whereas open stomatal pores were observed on uncoated fruit. The findings suggest that the GA 10% fortified with lemongrass oil (1.0%) could potentially be applied to maintain the quality attributes of Kinnow fruit stored at 5–7 °C for 75 days. [ABSTRACT FROM AUTHOR]

The pathogenicity of the fungus, Metarhizium anisopliae, commonly referred to as the green muscardine fungus, has been demonstrated against numerous insect species inhabiting various habitats. Laboratory experiments were carried out to investigate the impact of naturally derived adjuvants on the growth and spore characteristics of M. anisopliae. The natural polysaccharide (guar gum, gum acacia and carboxymethyl cellulose), vegetable oil (groundnut and cottonseed oil) and a synthetic adjuvant were used in the study at three distinct concentrations: 0.05%, 0.1%, and 0.2% v/v or w/v. Among the various adjuvants tested, both gum acacia and guar gum at concentrations of 0.1% and 0.2% were observed to have a positive impact on the growth of the fungus, resulting in enhanced radial mycelial growth, conidiospore production, surface area coverage, and conidiospore germination. Conversely, this fundamental study highlights the detrimental effects of synthetic adjuvants on the growth and spore characteristics of M. anisopliae. [ABSTRACT FROM AUTHOR]

Introduction: The Earth's surface is covered by 75% water. However, only 3% of this water is freshwater, and just 1% of that freshwater is accessible for human consumption. In most instances, humans are responsible for introducing pollutants into water. Dyes are among the most significant pollutants found in textile wastewater. As a result of its economic feasibility and high selectivity, adsorption has gained widespread popularity as a technique for treating organic dyes. In this research, a novel magnetic adsorbent was developed and utilized to remove certain toxic dyes. Material and Methods: In this research, Gum Arabic has been utilized as a natural and biodegradable polymer for the preparation of an effective adsorbent. To enhance the surface area, efficiency and stability of this natural polymeric adsorbent, citric acid has been employed as a green crosslinker. According to our findings, Gum Arabic has been polymerized for the first time with citric acid as a crosslinker and utilized for the removal of cationic dyes. Additionally, a crosslinked Gum Arabic polymer synthesized using citric acid has been incorporated with magnetite nanoparticles, ensuring its facile recovery from the medium upon application of a magnetic field. Furthermore, the prepared magnetic Gum Arabic was employed for the removal of Crystal Violet (CV), Malachite Green (MG), and Methylene Blue (MB) dyes from aqueous samples. Results and Discussion: In this study, the impact of various parameters, including initial dye solution concentration, solution pH, contact time between the adsorbent and the dye solution, adsorbent dosage, and dye solution temperature, on the removal efficiency of cationic dyes from aqueous samples was investigated. According to the results, the adsorption capacity of the adsorbent (CL-GA/Fe3O4) increased with increasing dye solution concentration, reaching maximum levels of 209.80, 205.12, and 177.12 mg/g for MB, CV, and MG, respectively. Additionally, the removal efficiency for these dyes increased with increasing solution pH, reaching 99.43% (MB), 97.13% (MG), and 96.62% (CV) at a pH of 6. Furthermore, the removal efficiency of dyes increased with increasing adsorption temperature, indicating an endothermic process. It is noteworthy that in this study, both MB and MG dyes reached their maximum removal efficiency after 20 min. In contrast, CV reached its maximum removal efficiency within a 15-min time frame. In this investigation, the Langmuir model showed a significantly better fit to the adsorption data compared to the Freundlich model, indicating its accuracy in describing monolayer adsorption. Additionally, this study revealed that the obtained adsorption kinetic data fit well with the pseudo-second-order model. This suggests that chemisorption likely plays a significant role in the rate-limiting step of the adsorption process. Conclusion: In this research, a novel nano adsorbent (CL-GA/Fe3O4) based on crosslinked Gum Arabic with citric acid and magnetized with Fe3O4 nanoparticles was employed for the removal of cationic dyes. To validate the effectiveness of the (CL-GA/Fe3O4) adsorbent, various characterization techniques, including FT-IR, FESEM, EDX, Zeta potential, and VSM, were employed. The findings of this study demonstrate the development of an innovative and efficient adsorbent for dye removal, which holds significant importance in addressing environmental challenges. [ABSTRACT FROM AUTHOR]

Emerging contaminants such as ceftriaxone are a significant issue in the environment. They have led to a series of ecological, environmental, and health issues, and it is urgent to find a green and secure method to remove antibiotics from water effectively. In this research, the CuCoFe2O4@Gum Arabic (GA)/Activated Carbon (AC) as an innovative bio-based matrix magnetic nanocatalyst was synthesized for the efficient degradation of ceftriaxone from aqueous media. The structure of CuCoFe2O4@GA/AC was characterized via FESEM, EDS, Mapping, XRD, FTIR, VSM, and DRS analyses. The structural analysis of the catalyst revealed its synthesis at the nanometer scale (40–50 nm), exhibiting high magnetic strength (Ms: 5.38 emu/g) and favorable optical properties with a bandgap of 3.6 eV. Under optimized conditions, including a pH of 5, 60 min of irradiation time, 0.24 g/L photocatalyst dose, and ceftriaxone concentration of 5 mg/L, the removal efficiency from synthetic and real samples was 94.43% and 62.5%, respectively. The photocatalytic degradation process of ceftriaxone followed pseudo-first-order and Langmuir–Hinshelwood kinetic models. Furthermore, analysis of the process mechanism indicated a prominent role of the superoxide radical. The catalyst had a high recovery capability and chemical stability. The photocatalytic degradation of ceftriaxone by CuCoFe2O4@GA/AC showcased remarkable efficiency, indicating its potential utility in the treatment of wastewater contaminated with antibiotics. [ABSTRACT FROM AUTHOR]

It is well-established that apoptosis, oxidative stress, and inflammation are associated with several disorders, including chronic renal disease and hepatic disease. Oxidative stress (OS) is a major cause of death from end-stage renal disease which also contributes to atherosclerosis and cardiac issues. The present study aimed to assess the efficacy of Gum Arabic (GA) in mitigating renal damage and hepatotoxicity in rats induced by Chloropyrifos-methyl (CPM). A total of 42 male Wistar rats were divided into seven groups, with four groups (group 2 [IC], group 5 [GA1+IC]a, group 6 [GA2+IC], and group 7 [GA1+IC]b treated with CPM for eight weeks to induce hepatic and renal damage. Two models of GA administration, including the standard oral model in drinking water (15% w/v) and the oral model by gavage at a dose of 1 g/kg body weight were administered. Physiological parameters of kidney and liver functions, including urea, creatinine, AST, and ALT along with anti-oxidant factors (Melaodialdehyde, superoxide dismutase, reduced glutathione, and catalase) were measured in plasma, and homogenates of renal and hepatic tissues on day 57 of the experiment. In addition, histopathological examination was conducted on liver and kidney tissues using hematoxylin and eosin stain to evaluate the efficacy of GA on damaged tissues. Gum Arabic was found to significantly reduce CPM toxic effects in the liver and kidney in groups treated with CPM as liver and kidney parameters were reduced to normal levels. Furthermore, GA reduced histological indicators of inflammation, fibrosis, and apoptosis, as well as renal morphological damage. Additionally, it reduced OS in liver and kidney homogenates. In conclusion, GA effectively reduced the damage that CPM inflicted on liver and kidney tissue by stabilizing physiological parameters to normal levels and repairing cellular structures damaged by OS. [ABSTRACT FROM AUTHOR]

2D graphene oxide (GO) membranes are gaining prominence for water reclamation from oily wastewater. Unresolved challenges include low membrane permeance from tight sheets and fouling during separation. In this work, a bioinspired Arabic gum (AG) was used as an intercalated agent with the help of glutaraldehyde to improve the GO membranes' permeation and fouling resistance. The 2D-laminated separating layer is crafted through a self-assembling innovative approach utilizing pressurized dead-end assembly. The Arabic gum intercalated graphene oxide-modified ceramic membrane (AGIGO-CM) appeared superhydrophilic and underwater (UW) superoleophobic with a UW oil contact angle (UWOCA) of 156.1 ± 1.2°. The membrane prepared with 1 mg of AGIGO (AGIGO-1-CM) offers a flux of 17 times higher than pristine graphene oxide (p-GO) while maintaining a separation efficiency of >99% during the separation of the oil-in-water emulsions. Molecular dynamics (MD) simulations showed AG intercalation expanding the interlayer distance by up to 20 Å, with AGIGO having a higher fractional free volume (FFV) of 0.986 compared to p-GO's 0.599. AGIGO-CM displayed lower interfacial formation energy (EIFE) of −1865.2 kcal/mol versus −765.5 kcal/mol for p-GO, indicating easier separation. It is further supported by the substantial interfacial thickness of 148 Å for AGIGO-CM compared to 53.0 Å for the p-GO membranes. AGIGO-CM showed minimal fouling, retaining >99% separation efficiency for 6 h. Compared to p-GO-CM, AGIGO-CM flux decreased by only 17.84% versus 44.72%. AGIGO-CM exhibited stability even in acidic and basic environments, showcasing its potential for high performance. [ABSTRACT FROM AUTHOR]

Naturally occurring hydrophilic colloids are versatile excipients in drug delivery systems. They are often used as coating materials, disintegrating agents, binders, emulsion stabilizers, and other applications. This study sought to investigate the physicochemical and emulsifying properties of gum extracted from Melia azedarach (MA). The gum was harvested, authenticated, and purified using ethanol precipitation. Physicochemical, microbial, and proximate analyses were performed on the purified gum. Oil of olive emulsions containing different amounts (5–15%w/v) of the gum as emulsifiers were prepared by homogenization. The zeta potential, creaming index, and average droplet size of products were assessed. The effects of pH changes, temperature, and monovalent and divalent electrolytes on the stability of the emulsions were also investigated. The yield of the gum after purification was 68.3%w/w. The gum has low moisture content and good swelling properties. Lead, copper, cadmium, and mercury were not detected. Emulsions containing 15%w/v of acacia or MA gum had the smallest average (Z‐average) droplet size (acacia: 1.837 ± 0.420 μm; MA gum: 2.791 ± 0.694 μm) and the highest zeta potential (acacia: −30.45 mV; MA gum: −32.867 mV). Increasing the concentration of the gums increased the emulsion viscosity with MA gum emulsions being more viscous than corresponding acacia emulsions. MA gum emulsions had higher emulsion capacity and stability but lower creaming index relative to acacia gum emulsions of similar concentrations. Potassium chloride (KCl) reduced zeta potential but increased Z‐average for emulsions prepared with either gum. Calcium chloride (CaCl2) produced a similar but more pronounced effect. When the pH was decreased from 10 to 2, the zeta potential of the droplets was reduced, but the droplet size of emulsions prepared from either gum was increased. Increasing temperature from 25 to 90°C produced no significant (p value >0.9999) change in droplet size. These findings suggest that MA gum is a capable emulsifying agent at 15%w/v. [ABSTRACT FROM AUTHOR]

This study investigated the utilization of innovative green composites made from hemp shiv, a waste by-product of hemp cultivation, with the aim of promoting sustainability within the construction industry. The manufacturing method involved the application of pressure in a mold to create the samples. These materials were produced using an environmentally friendly binder consisting of colophony, arabic gum, and corn starch. Moreover, white glue and bioepoxy were also used to compare with the green resins. Three different binder compositions were used for the specimens. The samples underwent mechanical testing through tensile and bending assessments, and their performance was compared to that of non-green binders to validate the effectiveness of the manufacturing processes. The study revealed that decreasing the moisture content during the curing process was crucial for improving the mechanical properties. The best results were achieved when using arabic gum as a binder, yielding a tensile strength of 2.16 MPa and a bending strength of 5.25 MPa, with a composition of 62.5% hemp shiv and a manufacturing process involving a pressure of 5 MPa. [ABSTRACT FROM AUTHOR]

Copyright of Food & Fermentation Industries is the property of Food & Fermentation Industries and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

The aim of this experiment was to identify the optimal process for preparing microcapsules of Pinus massoniana needles volatile oil. Using gum arabic and gelatin as wall materials, the microcapsules were prepared using the coacervation method. Single-factor experiments were conducted to investigate the effects of the ratio of gum arabic to gelatin, the core-to-wall ratio, the coacervation temperature, and the coacervation reaction time on the formation of the microcapsules. The encapsulation efficiency, drug loading, and yield were used as the criteria for evaluating the microcapsules, and the optimal conditions for Pinus massoniana needles volatile oil microcapsules were selected through orthogonal experiments. The results showed that when the ratio of gelatin to gum arabic was 1.0∶1.0, the core-to-wall ratio was 1.0∶2.0, and the coacervation temperature was 35 ℃, the encapsulation efficiency and comprehensive score of the Pinus massoniana needles volatile oil microcapsules were the highest, at 82.98% and 68.92, respectively. The microcapsules had a smooth surface, regular shape, non-adhesive properties, and uniform particle size. The study indicates that the coacervation method used in the experiment is efficient for preparing microencapsulation and can provide a reference for the application of volatile oils in the field of feed additives. [ABSTRACT FROM AUTHOR]

Objective: This study aimed to develop and evaluate the effectiveness of a water-soluble microencapsulation method for probiotic strains using gum Arabic (GA) and skim milk (SKM) over a three-month storage period following processing. Methods: Four strains of Pediococcus acidilactici (BYF26, BYF20, BF9, and BF14) that were typical lactic acid bacteria (LAB) isolated from the chicken gut were mixed with different ratios of GA and SKM as coating agents before spray drying at an inlet temperature 140°C. After processing, the survivability and probiotic qualities of the strains were assessed from two weeks to three months of storage at varied temperatures, and de-encapsulation was performed to confirm the soluble properties. Finally, the antibacterial activity of the probiotics was assessed under simulated gastrointestinal conditions. Results: As shown by scanning electron microscopy, spray-drying produced a spherical, white-yellow powder. The encapsulation efficacy (percent) was greatest for a coating containing a combination of 30% gum Arabic: 30% skim milk (w/v) (GA:SKM30) compared to lower concentrations of the two ingredients (p<0.05). Coating with GA:SKM30 (w/v) significantly enhanced (p<0.05) BYF26 survival under simulated gastrointestinal conditions (pH 2.5 to 3) and maintained higher survival rates compared to non-encapsulated cells under an artificial intestinal juices condition of pH 6. De-encapsulation tests indicated that the encapsulated powder dissolved in water while keeping viable cell counts within the effective range of 106 for 6 hours. In addition, following three months storage at 4°C, microencapsulation of BYF26 in GA:SKM30 maintained both the number of viable cells (p<0.05) and the preparation's antibacterial efficacy against pathogenic bacteria, specifically strains of Salmonella. Conclusion: Our prototype water-soluble probiotic microencapsulation GA:SKM30 effectively maintains LAB characteristics and survival rates, demonstrating its potential for use in preserving probiotic strains that can be used in chickens and potentially in other livestock. [ABSTRACT FROM AUTHOR]

This study aimed to assess the technical feasibility of incorporating selenized Lactobacillus spp. microencapsulated via spray drying into cattle feed. Gum Arabic and maltodextrin were used as encapsulating agents. The encapsulation process was carried out with a drying air flow rate of 1.75 m3/min, inlet air temperature of 90°C, and outlet air temperature of 75°C. The viability of the encapsulated microorganisms and the technological characteristics of the obtained microparticles were evaluated. Microorganisms were incorporated into beef cattle feed to supplement their diet with up to 0.3 mg of Se per kilogram of feed. The encapsulated particles, consisting of a 50/50 ratio of gum Arabic/maltodextrin at a 1:20 proportion of selenized biomass to encapsulant mixture, exhibited superior technical viability for application in beef cattle feed. Supplemented feeds displayed suitable moisture, water activity, and hygroscopicity values, ensuring the preservation of viable microorganisms for up to 5 months of storage, with an approximate count of 4.5 log CFU/g. Therefore, supplementing beef cattle feed with selenized and microencapsulated lactic acid bacteria represents a viable technological alternative, contributing to increased animal protein productivity through proper nutrition. [ABSTRACT FROM AUTHOR]