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Copyright of Shipin Kexue/ Food Science is the property of Food Science 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 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.)

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.)

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.)

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.)

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.)

Using red mud from alumina industry waste and edible fungus industry waste fungus rod as raw materials, red mud/waste fungus magnetic biochar (RMMBC) was prepared by co-pyrolysis method, and its morphological characteristics, pore structure and surface functional group changes were analyzed, its adsorption effect on norfloxacin(NOR) in water was explored, and its adsorption mechanism was explored by adsorption kinetics and isothermal adsorption characteristics, and tested in actual wastewater. The results showed that the optimal preparation conditions were raw material ratio (red mud, waste bacterial residue, urea) 1: 2.5: 0.5, calcination time 1 h, calcination temperature 700 °C. The maximum removal rate of NOR was 96.3% when a NOR concentration was 10 mg/L and 0.25 g RMMBC was added. The results showed that RMMBC had a large specific surface area(59.295 m²/g), pore volume (20.157 cm³/g) and saturation magnetic susceptibility(16.735 emu/g). The quasi-secondary kinetics of RMMBC and the Fre- undlich isothermal model can accurately describe the adsorption process of NOR on RMMBC, indicating that chemisorption may be the main mechanism of NOR adsorption on RMMBC, mainly including IT-IT interaction, surface complexation, hydrophobicity, hydrogen bonding and electrostatic interaction. The use of red mud and waste bacterial residue to prepare magnetic biochar adsorption effect is remarkable, which has the advantage of easy separation from the water body to avoid secondary pollution to the environment, which not only provides new ideas for low-cost treatment of antibiotic wastewater, but also helps to realize the stability, harmlessness and resource utilization of red mud and waste bacterial residue, and achieves the environmental protection goal of "waste treatment". [ABSTRACT FROM AUTHOR]

Copyright of Plastics Science & Technology / Suliao Ke-Ji is the property of Plastics Science & Technology 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.)

Copyright of Plastics Science & Technology / Suliao Ke-Ji is the property of Plastics Science & Technology 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.)

The objective: To delay the digestion of carbohydrates by inhibiting the activity of carbohydrate digestive enzymes, thereby preventing and controlling the effects of diabetes has become a research hotspot across multiple fields. j8 Conglycinin is the most abundant functional protein in soy protein, but it is unknown whether the peptides produced after gastrointestinal digestion possess the activity to inhibit carbohydrate digestive enzymes. Method: Conglycinin was subjected to simulated gastrointestinal digestion, and glucosidase inhibitory peptides and amylase inhibitory peptides were selected through virtual screening and ADMET prediction, and the inhibitory effects of the peptides on " --glucosi-dase and " --amylase were tested. Results: ! --Conglycinin was virtually digested into 95 small molecular peptides by pepsin, trypsin, and chymotrypsin; eight "--glucosidase inhibitory peptides and "--amylase inhibitory peptides were selected; it was found that hydrogen bonds and electrostatic interactions play an important role in the binding of peptides with glucosidase and amylase; in vitro verification found that the tetrapeptide EASY has a strong inhibitory effect on glucosidase, with an IC0 value of 208.6 g/mL, and no obvious inhibitory effect on amylase was observed. Conclusion: The glucosidase inhibitory peptide EASY possesses the activity to inhibit carbohydrate digestive enzymes and may become a potential inhibitor for controlling diabetes. [ABSTRACT FROM AUTHOR]

Three deep eutectic solvents (DESs) were prepared by mixing caprylic acid (C8) with decanoic acid (C10), lauric acid (C12) and myristic acid (C14) at a molar ratio of n(C8):n(C10) = 2:1, n(C8):n(C12) = 5:1 and n(C8):n(C14) = 6:1, respectively. The melting points of the DES mixtures were lower than those of the individual fatty acid components and other prepared DES mixtures with different molar ratios. Using the absorbance-concentration standard curve, the solubility of curcumin in the C8-C10, C8-C12 and C8-C14 DES was determined to be 1.11, 1.24 mmol/L and 1.44 mmol/L, respectively, which were 29, 32 and 38 times higher than those of curcumin in water. Gaussian simulation was used to calculate the Gibbs free energies of the molecular complexes formed by curcumin and the C8, C10, C12 and C14 fatty acid, and the values were determined to be -48.49, -64.27, -91.26, -120.59 kJ/mol, respectively. According to the electrostatic density diagram drawn by Multiwfn and VMD, the association manner between curcumin and the fatty acids was obtained. Curcumin and C14 with the longest alkyl chain formed a "sandwich" typed complex, in which curcumin and C14 had strong hydrogen bonding and hydrophobic interactions, making curcumin show the highest solubility ability, the strongest UV-Vis absorption and fluorescence emission intensities in the C8-C14 DES. The stability and DPPH free radical scavenging ability of curcumin dissolved in DESs were found to be much better than in water. [ABSTRACT FROM AUTHOR]

Ternary deep eutectic solvents (DES) comprising choline chloride (ChCl), glycerol (Gly) and ethanolamine (MEA) with different molar ratios were prepared. The CO2 absorption ability of the ternary DES was investigated at room temperature and under atmospheric pressure. Among four ternary DES samples prepared with different molar ratios, a ChCl-Gly-MEA (1:1:10) ternary DES was found to absorb the most CO2 at a capacity of 0.18 g CO2 (DES per gram) at 298 K and 101.3 kPa. The experimental results showed that the CO2 absorption capacity of ChCl-Gly-MEA (1:1:10) ternary DES increased with an increase in gas flow rate and a decrease in water content. The gas flow rate improved the mass transfer efficiency of CO2 in the ternary DES system, and shortened the time required for CO2 absorption to reach equilibrium. However, the addition of water could weaken the hydrogen bonding interaction among the three components in the DES system. Results from Fourier transform infrared (FT-IR) and nuclear magnetic resonance (NMR) spectroscopy indicated that CO2 interacted with the amino groups in DES to form carbamates. The absorption of CO2 by ChCl-Gly-MEA underwent both physical and chemical absorption, and the chemical absorption was significantly enhanced by the addition of MEA. A recovery experiment showed that no obvious loss in CO2 absorption was detected after five absorption/desorption cycles with an absorption rate of 97.3% being retained. [ABSTRACT FROM AUTHOR]

In order to study the effect of epigallocatechin on the oxidation of myosin in sea bass under microwave heat-ing,differentmass concentrations of epigallocatechin (20,40 /g/mL and 60 /g/mL) were used to inhibit myosin oxidation and study the mechanism of its effect on myosin. EGC could delay the increase of carbonyl content and dityrosine of myosin and the decrease of total sulfhydryl content after microwave treatment. Carbonyl content was reduced by 19.82%- 72.67% compared with the control. AFM showed that the myosin treated with EGC were small and evenly distributed. Microwave induced myosin to unfold and increased fluorescence intensity. EGC maintained the relative stability of the tertiary structures and delayed the increase of fluorescence intensity.Before microwave, low mass concentration EGC (20, 40 /g/mL) significantly increased a helix content and maintained the stability of myosin secondary structure. After microwave, 20 /g/mL EGC maintained the stability of secondary structure. Molecular dynamics simulation showed that RMSF and RMSD value of myosin-EGC decreased, SASA decreased, secondary structure fluctuation decreased. It was found that myosin enhanced the stability of the complex under heating electric field by hydrogen bonding and hydrophobic interaction with EGC. [ABSTRACT FROM AUTHOR]

To obtain high-performance energetic materials, 3,5-diamino-1,2,4-triazole was utilized as a raw material to synthesize 3-hydrazinyl-5-amino-1H-1,2,4-triazolium dihydrochloride(compound 1)through diazotization and reduction reactions. A novel energetic ionic salt, 3-hydrazinyl-5-amino-1H-1,2,4-triazolium dinitrate(compound 2), was prepared by the metathesis reaction of compound 1 with silver nitrate. The structure of compound 2 was characterized using various techniques including FTIR, NMR, mass spectrometry, elemental analysis, and single-crystal X-ray diffraction. Thermal decomposition of compound 2 was studied by DSC and TG. The contribution of hydrogen bonding to the intermolecular interactions in the crystal of compound 2 was calculated using Crystal Explorer software. The detonation and safety properties of compound 2 were also investigated. The results show that compound 2 belongs to monoclinic crystal system with space group P2/n and cell parameters a=6.9296Å,b=9.9082Å,c=13.3696Å,α=90.00°,β=103.51(2)°,γ=90.00°,V=892.54(11)Å3. It exhibits excellent thermal stability with a thermal decomposition temperature of 189.7°C. Furthermore, compound 2 demonstrates outstanding detonation performance and low sensitivity, with detonation velocity and pressure values of 8673m/s and 32.5GPa, respectively. The friction sensitivity and impact sensitivity are 112N and 25J, respectively. [ABSTRACT FROM AUTHOR]

Copyright of Shipin Kexue/ Food Science is the property of Food Science 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 Shipin Kexue/ Food Science is the property of Food Science 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.)

The bio-based 1, 3-propanediol (1, 3-PDO) stock solution after pretreatment is mainly composed of low concentration of 1, 3-PDO and 2, 3-butanediol (2, 3-BDO). 1, 3-PDO and 2, 3-BDO are diols and contain two hydroxyl groups that can form strong hydrogen bonds with the large amount of water present, increasing the difficulty of separation. However, conventional hydrophobic adsorbents with only van der Waals cannot achieve effective separation of diols by dynamic column adsorption. Therefore, ZIF-93 with van der Waals group —CH3 and hydrogen bonding group —CHO is selected to investigate its batch and dynamic column adsorption capacity on low concentration of 2, 3-BDO/1, 3-PDO. Firstly, toluene is introduced as solvent and template agent in the synthesis of ZIF-93, and the structural unit lta cage of ZIF-93 is supported by π-π interaction between toluene and imidazole-based ligands as well as toluene molecules, which effectively increases the BET surface area and microporous pore volume of ZIF-93. The results show that the dynamic column adsorption capacity of ZIF-93 for 2, 3-BDO/1, 3-PDO (50/50 g/L) is 69. 9 mg/g/17. 3 mg/g, and the selectivity for 2, 3-BDO/1, 3-PDO is 4.0. Compared with the conventional hydrophobic adsorbent, ZIF-93 with hydrogen-bonding groups has an increased slope of the breakthrough curve, a shorter mass transfer interval, and an increased breakthrough time, thus improving the effective utilization of the adsorption bed and facilitating the continuous separation operation in industry. The simulation results show that the hydrogen bonding interaction formed between —CHO of ZIF-93 and —OH/—CH3 of 2, 3-BDO is higher than that with 1, 3-PDO, thus achieving effective separation of low concentration of 2, 3-BDO/1, 3-PDO. After three adsorption-resolution cycle experiments, the adsorption capacity of ZIF-93 on 2, 3-BDO does not change, and ZIF-93 still maintains good stability. Therefore, ZIF-93 is an efficient adsorbent for the separation of diols in aqueous solution. [ABSTRACT FROM AUTHOR]

The interaction between muscle proteins and aroma compounds during processing can lead to a loss of aroma in the meat products, thereby altering the aroma profile for the consumer preference. Heat treatment has been commonly used in meat processing. The addition of spices during stewing meat can be used to eliminate the off-flavor for the enhanced color and the fragrance. Among them, terpenoid compounds are the key volatile flavor compounds in spices. But it is unclear on the mechanism of their interaction with muscle proteins. Myofibrillar protein (MP) and sarcoplasmic protein (SP) also play important roles as components of muscle proteins. This study aims to clarify the patterns and mechanisms of the interaction between muscle proteins and terpenoid compounds during heat treatment. Various physicochemical properties of MP and SP were determined at different heating times, such as surface hydrophobicity, total sulfhydryl content, particle size, and secondary structure content. Three terpenoid compounds (3-carene, limonene, and linalool) which significantly contributed to the aroma of stewed pork, were selected to investigate the interaction between aroma compounds and muscle proteins. Solid-phase microextraction-gas chromatography-mass spectrometry (SPME-GC-MS) was used to study the changes in the aroma absorption ability of proteins with heating time. The correlation was examined between aroma absorption and conformational changes of MP and SP. Moreover, the molecular docking analysis was also implemented to reveal the mechanism of muscle proteins binding to the terpenoid compounds. The results indicated that the heat treatment significantly altered the conformation of MP and SP. The surface hydrophobicity and total sulfhydryl content of MP and SP initially increased and then decreased, as the heating time increased, due to their unfolding and aggregation behaviors. Both MP and SP exhibited an increase in particle sizes during heating, particularly with a higher degree of SP aggregation, due to the lower thermal stability. Furthermore, the secondary structure content analysis showed that the intramolecular hydrogen bond of proteins was rearranged into intermolecular hydrogen bond, and then the ordered structure was transformed into a random coil conformation following heating, resulting in a decrease of α -helix structure content and an increase of β -sheet and random coil structure content. MP and SP demonstrated enhanced aroma adsorption during the initial 5 min of heating, due to their unfolded secondary structures and exposed binding sites. However, the continued heating led to the aggregation of MP and SP, burying the binding sites, and reducing their adsorption ability. Although the MP and SP exhibited similar adsorption within 0- 5 min of heating, the SP displayed weaker adsorption than the MP after 10-60 min of heating. This difference was attributed to the higher degree of aggregation in the SP, which resulted in greater steric hindrance and the burial of more aroma-binding sites. Molecular docking results demonstrated that the hydrophobic interactions dominated the interactions between 3- carene/limonene and muscle proteins, whereas the linalool bound to muscle proteins through hydrophobic interactions and hydrogen bonds. Overall, the heat treatment can be expected to modify the conformation of muscle proteins, and then regulate the exposure or burial of aroma binding sites. Consequently, there was some impact on the interaction between muscle proteins and terpenoid compounds. The findings can provide theoretical guidance to control the aroma retention/release behavior during the thermal processing of meat products for the higher quality of meat products. [ABSTRACT FROM AUTHOR]

Copyright of Shipin Kexue/ Food Science is the property of Food Science 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.)

The effects of low degree inulin LPI（DP≤10）,medium degree inulin MPI（DP 2-60） and high degree inulin HPI（DP≥23） on the powder properties, granular strength and cooking quality of tapioca pearls were studied. The results showed that inulin could interact with starch in hydrogen bond, compete with starch for water, inhibit the swelling of starch particles and improve the water solubility of the powder, thus affecting the granular strength and cooking quality of tapioca pearls. LPI has the stronger hydrogen bond interaction with starch and forms a stronger gel network structure, so it is best to add LPI. Adding 3%（w/w） LPI significantly reduced friction loss（1. 96%-1. 04%） and cooking loss（47. 8%-43. 6%） of tapioca pearls. It also significantly improved the transparency（9. 4%-12. 6%）,volume expansion（4. 9-7. 0）,hardness（483 to 674 g）,and chewiness（202 to 299 g）. The addition of MPI and HPI had adverse effects on the transparency, breaking force or cooking loss of tapioca pearls. This study shows that the addition of inulin is an effective green means to improve the quality of tapioca pearls, and the addition of low polymerization inulin is better. [ABSTRACT FROM AUTHOR]

This paper summarises the adsorption behaviour of microplastics on hydrophobic and hydrophilic organic pollutants, mainly PCBs and PAHs for hydrophobic organics and antibiotics for hydrophilic organics. Possible adsorption mechanisms are analysed, with hydrophobic partitioning being the most common mechanism, hydrogen bonding interactions, π-π interactions, electrostatic interactions, van der Waals forces and pore filling are also included. The adsorption of organic pollutants and microplastics can be influenced by the specific surface area, ageing and crystallinity, besides differences in the external environmental pH, salinity and dissolved organic matter can also affect the adsorption capacity. The article concludes with an outlook for future research, including studying the adsorption behaviour of mixed, aged and nanoplastics and the mechanisms of toxicity in living organisms, etc. [ABSTRACT FROM AUTHOR]

Copyright of Shipin Kexue/ Food Science is the property of Food Science 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 Journal of Chinese Institute of Food Science & Technology / Zhongguo Shipin Xuebao is the property of Journal of Chinese Institute of Food Science & Technology Periodical 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.)

Copyright of Shipin Kexue/ Food Science is the property of Food Science 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 Journal of Chinese Institute of Food Science & Technology / Zhongguo Shipin Xuebao is the property of Journal of Chinese Institute of Food Science & Technology Periodical 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.)

Copyright of Shipin Kexue/ Food Science is the property of Food Science 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.)

【Objective】 The study was conducted to develop a slow-release fertilizer with multiple nutrients, excellent nitrogen slow-release performance, simple process, and semi-interpenetrating network structure. 【Method】 By using solution polymerization with in situ extrusion technology, the polymerization and processing processes were combined. With amino acid powder (AARP) and ferrous sulfate (FeSO4 ) as raw materials, AARP and AARPFe were compounded with urea-formaldehyde (UF) macromolecular chains to form slow-release fertilizers with semi-interpenetrating network structures (AARP-UF and AARPFe-UF). The structures of the slow-release fertilizers were characterized and analyzed by infrared spectroscopy, X-ray diffraction and thermogravimetry, and the surface morphology was observed by scanning electron microscopy (SEM). The compression strength and nitrogen nutrient release rate in still water and soil were measured to investigate the effects of adding AARP and AARPFe on the slow-release performance and to analyze the reasons for their performance improvement. 【Result】 The crystallinity of the three slow-release fertilizers UF, AARP-UF, and AARPFe-UF were 67.9%, 59.2%, and 57.4%, respectively, and the compression strengths were 1.64, 3.01 and 4.06 MPa. The initial nitrogen release rates in still water were 24.8%, 18.6%, and 15.1% respectively, and the cumulative release rates in soil after 90-daytreatment were 55.9%, 51.4%, and 46.3%, respectively. The addition of AARP and AARPFe disrupted the crystal structure of UF molecular chains and formed hydrogen bonding interactions, which reduced the crystallinity of the slow-release fertilizer, increased the compression strength, and significantly improved the nitrogen slow-release performance. Combining all the results, the effect of slow-release fertilizer AARPFe-UF was optimal. 【Conclusion】 The prepared new slow-release fertilizer solves the problem of the high initial nitrogen release rate of urea-formaldehyde fertilizer and avoids the waste of resources. The fertilizer prepared with green and environment-friendly raw materials shows excellent comprehensive performance, which is conducive to industrial production. AARP contains natural nutrients that have ecological effects and contribute to sustainable development of agricultural systems. [ABSTRACT FROM AUTHOR]

Copyright of Shipin Kexue/ Food Science is the property of Food Science 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.)

A novel amphiphilic silicon-polyurethane antifouling polymer was synthesized with PDMS as the main chain and hydrophilic polymer as the side chain. With N-vinylpyrrolidone and butyl acrylate as raw materials, hydrophilic side chains were synthesized by free radical copolymerization and introduced into the silicone polyurethane system as chain extenders. Due to the hydrogen bond interaction between carbamate bonds, the prepared silicone-polyurethane polymer has high mechanical properties (tensile strength > 14 MPa, elongation at break > 1 200%) and high substrate adhesion (> 1 MPa). After introducing hydrophilic side chain, the polymer still has a low surface energy (24. 1 mJ/m²), and the antibacterial adhesion rate to Pseudomonas was 98%. In addition, MS software was used to simulate the number of hydrogen bonds and free volume molecular structure, which explained that the introduction of hydrophilic side chains led to the decline of mechanical properties because the macromolecular side chains weakened the interaction between polymer segments. [ABSTRACT FROM AUTHOR]

Copyright of Science & Technology of Cereals, Oils & Foods is the property of Science & Technology of Cereals, Oils & Foods 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.)

Copyright of China Pulp & Paper is the property of China Pulp & Paper Magazines Publisher 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 Shipin Kexue/ Food Science is the property of Food Science 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.)

The effects of different mass concentrations of Pholiota nameko polysaccharides on pasting, rheological, texture, thermodynamic properties and microstructure of corn starch were studied. To explore the interaction mechanism between polysaccharides and corn starch and reveal the dose-effect relationship between polysaccharides and starch quality. The results showed that Pholiota nameko polysaccharide could improve the viscosity and gelatinization temperature of the compound system, indicating that the polysaccharide delayed the gelatinization process. When the mass concentration of Pholiota nameko polysaccharides was 0.9 g/mL, the breakdown value of the compound system was 1.77mPa·s, the setback value was 3.63mPa·s and the gelatinization enthalpy was 3.95 J/g, indicating that the anti-aging effect and stability of the compound system were the best. With the increase of polysaccharide mass concentration, the viscoelasticity and pseudoplasticity of the complex system gradually increased, and the flow index gradually decreased. Fourier transform infrared spectroscopy analysis showed that the interaction between the polysaccharides and corn starch was through hydrogen bond, and the hydrogen bond interaction was the strongest when the polysaccharide mass concentration was 0.9 g/mL. The results of cryo-electron microscopy showed that the microstructure of the compound system was honeycomb with uniform pores when the polysaccharide mass concentration was 0.6 g/mL. [ABSTRACT FROM AUTHOR]

Copyright of Acta Materiae Compositae Sinica is the property of Acta Materiea Compositae Sinica 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 Acta Materiae Compositae Sinica is the property of Acta Materiea Compositae Sinica 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.)

Naturally-occurring precipitate of traditional Chinese medicine (TCM) is generally considered to be a common phenomenon. The formation of naturally-occurring precipitate originates from the interactions among different chemical components during the decoction process. Previous literature has reported the existence of naturally-occurring precipitate in Sini decoction. In this study, seven pairs of acid-base non-covalent complexes in Sini decoction were characterized using cold spray ionization-mass spectrometry (CSI-MS) . The CSI device was built in house, where a stream of nitrogen gas was cooled by liquid nitrogen and used as the sheath gas, providing low-temperature ionization conditions for the MS analysis of the acid-base non-covalent complexes. The gas pipeline was equipped with a valve to regulate the nitrogen flow rate. Data acquisition was carried out using a quadrupole/Orbitrap high-resolution mass spectrometer operated in both full-scan MS and collision-induced dissociation MS/MS modes. Experimental results showed that the seven pairs of acid-base non-covalent complexes were unequivocally observed in positive and negative ionization modes. Mass spectrometric responses for each acid-base non-covalent complex varied with different chemical structures, binding abilities and ionization efficiencies. A representative pair of acid-base non-covalent complex (enoxolone/benzoylmesaconine) was selected to investigate the influence of the acid-base concentration ratio (3∶1, 2∶1, 3∶2, 1∶1, 2∶3, 1∶2, 1∶3) on the binding stoichiometry. The enoxolone/benzoylmesaconine complexes with the binding ratios of 1∶1, 1∶2, 2∶1 were observed, among which the mass spectrometric peak of the 1∶1 binding ratio was the most intensive. The non-covalent interactions of the representative enoxolone/benzoylmesaconine complex were analyzed using isothermal titration calorimetry (ITC) and computational chemistry. The thermodynamic parameters were obtained in the ITC experiment. In comparison with entropy change, the contribution of enthalpy change to Gibbs free energy was more significant, indicating that Van der Waals force and hydrogen bonding might be the main driving force in the formation of acid-base non-covalent complexes. This result was further confirmed by the docking model and simulation results of computational chemistry. Multiple hydrogen bonds derived from the interactions between specific atoms locating in the acid and base compounds promoted the self-assembly process. Moreover, Van der Waals attraction or repulsion force was generated between the C and H atoms at different positions, which in conjunction with hydrogen bonding interaction drove the formation of the acid-base non-covalent complexes. This study provides theoretical foundation and technical instruction for exploring the formation mechanism of naturally-occurring precipitate in Sini decoction. [ABSTRACT FROM AUTHOR]

Copyright of Shipin Kexue/ Food Science is the property of Food Science 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.)

A pH-colorimetric film is one of the most important indicators to acquire straightforward information by the visible color changes without opening packages in the food industry. Among them, purple cabbage anthocyanins (PCA) can be expected to serve as a natural anthocyanin pigment with high pH sensitivity. Different color changes can be easily observed in the pH variation, due to the unique structure. The PCA color can be changed from dark to light red in the acid solutions (pH=2-4) as the dominant flavylium cation. At pH level of 5-6, the flavylium cation can react with the hydrogen, and then transform into the carbinol pseudobase (colorless) or chalcone (colorless) and appeared pink. The quinoidal base can also be established with the increase of pH (7-8). Subsequently, the anion quinoidal (blue) is dominant in the alkalinity pH (9-10). The color can turn greenish-blue for the anionic quinoidal base (blue) that is synthesized at pH 11. Soy Protein Isolate (SPI) (a byproduct of the soybean oil industry) can be used to characterize by its low cost, high biodegradability, biocompatible, and excellent film-forming properties. Also, the SPI, as a natural material is easy to fuse with the purple cabbage anthocyanins. Hence, the SPI can be selected as a film-forming material. However, the SPI films share relatively low mechanical properties and thermal stability, due to the hydrophilic bonds (-OH, -NH2, -COOH, and -SH) in the film matrix. The typical C6-C3-C6 carbon skeleton structure in anthocyanins can contain two benzoyl rings and oxygenated hexameric heterocycles with the cations (a typical 2-phenyl-benzopyran cation structure). Two typical and highly reactive structural in the PCA molecules can cross-link with the SPI molecules via the hydrogen bonds and electrostatic interactions, in order to form the homogeneity and low surface roughness of films, due mainly to the excellent fusibility and compatibility of PCA and SPI, indicating the improved mechanical properties and pH sensitivity of SPI/PCA indicator films. Therefore, this study aims to synthesize the SPI/PCA-based pH-indicator films with a uniform structure, excellent mechanical properties, and strong pH sensitivity, and then apply them to monitor the freshness of pasteurized milk. FTIR and SEM demonstrated that the PCA was successfully dispersed in the SPI film matrix, and then interacted with the SPI molecules under electrostatic interactions and hydrogen bonds. In SEM micro graphs, the number of small particles was observed to float on the surface, while small holes were in the section of indicator films with the overdose PCA. The highest limitation of the fusion degree of PCA with SPI was 4%. PCA significantly enhanced the mechanical properties of indicator films. The tensile strength of indicator films increased by 53.25% (from 2.46 to 3.77 MPa), and the elongation at break increased by 25.25% (from 105.36% to 131.96%), compared with the SPI/Na2SO4 film. The thermal stability of indicator films with the PCA was similar to the SPI films (167 to 194℃). The color difference (ΔE) of indicator films with the PCA from the standard white increased from 21.13 to 52.88. L value, where the indicator film was yellowish-green. The indicator films presented strong chromatic stability without the visible color difference within 5 days at room temperature. A high pH sensitivity was found with the visible color difference under different pH values. Two properties were beneficial to monitor the freshness of the indicator film. The indicator films were also applied to monitor the milk. The color was then changed from green to red, together with the freshness deterioration of pasteurized milk. Also, the color difference with the initial film was visibility (ΔE≥5) at any time. Hence, purple cabbage anthocyanins were used to promote the indicator function of pure SPI films. The indicator films can be used to monitor the freshness of pasteurized milk via color change. Therefore, the indicator films can be widely expected to apply in intelligent packaging, due mainly to excellent pH-sensitive properties and color stability. The finding can provide insightful ideas to design and produce SPI/PCA-based pH-indicator films. [ABSTRACT FROM AUTHOR]

Green mold caused by Penicillium digitatum is one of the most destructive postharvest diseases in citrus fruit. Chemical fungicides (such as prochloraz) can be expected to effectively control this disease. But the widespread use of chemicals can easily lead to drug resistance of the pathogen, environmental pollution and food safety risks. Previous studies have shown that the plant essential oils and their bioactive components can be served as a type of potential biofungicide, due to the effective reduction of the postharvest disease in citrus fruit without impairing the fruit quality. However, the scale application can be largely limited by the volatility and easily oxidized property. Fortunately, the inclusion of cyclodextrins can be expected to improve the effectiveness of plant essential oils. In this study, the saturated aqueous solution was used to prepare the inclusion complexes of trans-2-hexenal, an active component in plant essential oils, particularly with four kinds of cyclodextrins including α-cyclodextrin (α-CD), β-cyclodextrin (β-CD), γ-cyclodextrin (γ-CD), and hydroxypropyl-β-cyclodextrin (HP-β-CD). An effort was also made to improve the antifungal efficiency of trans-2-hexenal. At the same time, the antifungal activity of these inclusion complexes against P. digitatum was analyzed by in vitro assay, in order to determine the structure and the inclusion mode of the inclusion complex with the highest efficiency. As a result, four inclusion compounds designated as α-CDTH, β-CDTH, γ-CDTH, and HP-β-CDTH, respectively, were prepared by the saturated aqueous solution. The morphological results showed that the α-CDTH, β-CDTH, and γ-CDTH powders were fine and dense, while the HP-β-CDTH powder was rough with distinct particles. The in vitro antifungal data demonstrated that these inclusion compounds were used to effectively inhibit the growth of P. digitatum mycelium in a concentration-dependent manner. The minimum antifungal concentration (MFC) of β-CDTH and γ-CDTH to the mycelial growth of P. digitatum was estimated to be both 1.00 mg/mL, while the MFCs of α-CDTH and HP-β-CDTH were 2.00 and 4.00 mg/mL, respectively. The entrapment efficiency indicated that the highest entrapment efficiency (75.36%) was found in the γ-CDTH, whereas the HP-β-CDTH was the lowest entrapment efficiency (38.63%). The AL type was used to describe the phase solubility curves of the four cyclodextrin inclusion compounds. The solubility was also ranked in the descending order of HP-β-CD>γ-CD>β-CD>α-CD. The best overall performance was found in the γ-CDTH considering the in vitro antifungal efficiency, entrapment efficiency, and solubility. Thus, the γ-CDTH was selected as the material for the follow-up experiments. In vivo assay showed that the γ-CDTH at different concentrations reduced the incidence of green mold in citrus fruit at varying degrees (P<0.05), with 8.00 g/L γ-CDTH as the most effective concentration. Once the control fruits were totally rotten after 6 d storage, the disease incidence in the samples of 8.00 g/L γ-CDTH treatment was only 58.3 %, which was comparable to that of prochloraz (56.7 %). In addition, the γ-CDTH treatment effectively maintained the citrus fruit firmness without any adverse effects on the weight loss rate, color, vitamin C, and total soluble solids contents of citrus fruit. The Scanning Electron Microscopy (SEM) observation revealed that the shapes and sizes of γ-CDTH were quite different from those of γ-CD and physical mixtures, the varying sizes and irregular crystals were found in γ-CD. In contrast, the physical mixtures presented a rough surface, whereas the γ-CDTH was a smooth surface with a flake-like morphology. The nuclear magnetic resonance (NMR) analysis demonstrated that the hydrogen bonding interactions between H-3ʹ and H-5ʹ of γ-CD and H-6 of trans-2-hexenal were attributed to the formation of γ-CDTH. In summary, four inclusion compounds of trans-2-hexenal with cyclodextrins were prepared to further verify the antifungal efficiency and structural characteristics of γ-CDTH. The findings can provide a direct basis for the γ-CDTH to control citrus postharvest diseases in the development of plant-derived natural preservatives. [ABSTRACT FROM AUTHOR]

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Ceftriaxone sodium (CS) is a commonly used antibiotic drug that is frequently detected in surface water and sewage plant drainage. To enhance the adsorption performance of the adsorbent resin for CS, the amino-modified oxygenated ultra-high cross-linked adsorbent resin GNH-01 was prepared by Friedel-Crafts reaction and chemical modification using a low cross-linked polystyrene-divinylbenzene resin (CMCPS) as the backbone. Characterization analysis showed that the resin surface has loose small pores, large specific surface area, and abundant for-vacancy structure, and the surface is rich in oxygen- and nitrogen-containing functional groups. The effects of time, temperature, initial concentration, solution pH and resin dosage on the adsorption effect were investigated with CS as the target pollutant, and the adsorption mechanism was proposed in combination with the adsorption kinetics. The results showed that the best adsorption effect was achieved at an initial concentration of 40 mg/L, a dosage of 1 g/L, a temperature of 30 ° and pH 6.18(Qe=38.62 mg/g, removal rate 96.55%). The kinetic study showed that the adsorption process was in good agreement with the proposed secondary kinetic equation (R²>0.98). CS was both physisorbed and chemisorbed on the resin. The introduction of functional groups enhanced the adsorption performance of the resin due to the charge interaction between the adsorbent and CS. In addition, the hydrogen bonding interaction also increased the adsorption amount of the adsorption process. The Box-Behnken model of response surface method was used to optimize the experimental conditions, and the effects of the factors and their interactions on the adsorption effect were explored to determine the optimal adsorption conditions. Using 5.00% NaOH solution as its desorption solution, the GNH-01 resin was regenerated with good effect and could be reused. This study provides a mechanistic basis and data support for the application in CS wastewater resource treatment. [ABSTRACT FROM AUTHOR]

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OBJECTIVE: To explore the mechanism of block of proliferation 1(BOP1), the key target of baicalin combined with geniposide in the treatment of colorectal cancer based on multi-database combined with molecular docking technique. METHODS: The structural model of BOP1 protein target was constructed by Maestro 11. 9 software, and the active site was simulated by SiteMap algorithm. The high precision docking with baicalin and geniposide was realized by Glide algorithm, and the detailed interaction was analyzed by protein-ligand interaction profiler (PLIP) platform. RESULTS: The structural confidence of the reduction was high, and the docking scores of baicalin and geniposide with BOP1 target were respectively - 6. 401 and - 6. 241. PLIP analysis showed that the docking mainly depended on the hydrogen bond interaction. CONCLUSIONS: This study explores the possibility of baicalin combined with geniposide in the treatment of colorectal cancer by affecting BOP1, and has certain implications for the development of antitumor drugs and clinical guidance. [ABSTRACT FROM AUTHOR]

Copyright of Journal Of Sichuan University (Natural Sciences Division) / Sichuan Daxue Xuebao-Ziran Kexueban is the property of Editorial Department of Journal of Sichuan University Natural Science Edition 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.)

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