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Lysiphyllum strychnifolium (Craib) A. Schmitz (LS) has been widely used as traditional medicine in the northeast region of Thailand to stimulate the production of breast milk. There are no known studies on the estrogenic action of LS on the stimulation of breast milk production. Hence, the present study aimed to investigate the estrogenic effect of LS leaf water extract compared with quercetin, one of the compounds in LS, in human breast cancer cells (MCF-7). The effect of LS leaf water extract and quercetin on cell viability of MCF-7 cells was studied by MTT assay at a concentration range of 0 to 500 µg/mL. The expression of estrogen-dependent genes, the pS2, ERa, and ERß was also examined by real-time RT-PCR, and the expression of ERa protein was detected by Western blotting. The quercetin content in the LS water extract was 285.67 ± 0.11 µg/g of dry extract. MCF-7 cells treated with LS leaf water extract (20 µg/mL) showed an upregulation of pS2 gene expression similar to that of the treatment with E2 (10-9 M) compared with that of the untreated control. The ERa gene expression was found to be upregulated by quercetin (0.16 µg/mL) and E2 (10-5 M) compared with the untreated control. In addition, quercetin (0.16 µg/mL) and LS extract (0.8, 4, and 20 µg/mL) decreased the phosphorylation of ERa at Ser167. LS extract (20 µg/mL) decreased ERa, but there was no significant effect on the ERa at Ser118 protein expression. This study provided scientific evidence for the potential estrogenic activities of LS leaf water extract. This indicates that ER-dependent pathways in MCF-7 cells served as mediators, facilitating the estrogenic properties of LS and its compounds to function effectively. Since LS induced pS2 gene transcription, it was confirmed that this could affect the transcription of estrogen-responsive genes, causing estrogenic effects. [ABSTRACT FROM AUTHOR]

Giant Indian Gooseberry (GIG) or Phyllanthus indofischeri Bennet are commercially cultivated and commonly used herbs in Traditional medicine, especially in Thailand. The aim of this study was to assess the potential of the GIG extracts in anti-aging activities to be a dermatological application. The juice, meat residues, and seeds of GIG collected from Sra Kaeo Province, Thailand, were extracted by the Boiling method (B) and the Maceration process (M) by using 95% ethanol as a solvent. The GIG extracts gave the total phenolic, total flavonoid contents and quercetin contents, as well as exhibited anti-oxidative activities. The GIG-R-B extract inhibited tyrosinase activity and had the highest anti-melanogenesis activity on B16F10 cells at 31.63 ± 0.70%. The GIG-S-B, GIG-S-M, and GIG-R-M extracts demonstrated the highest collagen biosynthesis, which was comparable to vitamin C (p < 0.05), whereas the GIG-R-B extracts gave the highest stimulation of anti-aging genes (SIRT1 and FOXO1). All extracts at the concentration of 0.1 mg/mL showed no cytotoxicity on human skin fibroblasts. Therefore, the GIG-S-B extract was discovered to be a promising natural anti-aging agent for dermatological health and aesthetic applications that can be further developed in cosmetic, functional food and food supplement industries. [ABSTRACT FROM AUTHOR]

Pouteria cambodiana is a perennial plant that has a wide distribution in tropical regions. It is commonly referred to as 'Nom-nang' in the northern region of Thailand. The bark of this plant has been used for the purpose of promoting lactation among breastfeeding mothers. Moreover, P. cambodiana bark has a high nutraceutical potential due to the presence of saponins, which are secondary metabolites. The purpose of this study was to determine the optimal conditions for ultrasound-assisted extraction (UAE) of saponins from the bark of P. cambodiana and to assess the in vitro inhibitory activities of saponin-rich extracts. The most effective extraction conditions involved a temperature of 50 °C and a 50% concentration level of ethanol as the solvent, which allowed the extraction of saponin at a concentration of 36.04 mg/g. Saponin-rich extracts and their hydrolysates from P. cambodiana bark were evaluated for their ability to inhibit α-glucosidase and pancreatic lipase. The IC50 values for saponin- and sapogenin-rich extracts inhibiting α-glucosidase were 0.10 and 2.98 mg/mL, respectively. Non-hydrolysed extracts also had a stronger inhibitory effect than acarbose. In the case of pancreatic lipase, only the hydrolysed extracts exhibited inhibitory effects on pancreatic lipase (IC50 of 7.60 mg/mL). Thus, P. cambodiana bark may be an applicable natural resource for preparing ingredients for functional products with inhibitory activity against α-glucosidase and pancreatic lipase. The phenolic contents, saponin contents, and antioxidant activities of the dried extract stored at a low temperature of 25 °C for 2 months showed the best stability, with more than 90% retention. [ABSTRACT FROM AUTHOR]

Background: The storage roots of Pachyrhizus erosus (PE) have been traditionally used as a skin whitening agent in Indonesia and are also consumed fresh in many Southeast Asian countries, including Thailand. However, research on the biological activities of PE is limited. Objective: This study aimed to measure the total phenolic and flavonoid contents and to test the anti-tyrosinase and antioxidant activities of PE extracts. The Folin-Ciocalteu colorimetric, the Aluminium chloride colorimetric, the DPPH scavenging, and the Dopachrome assays were used for the experiments. Results: The dichloromethane extract had the highest anti-tyrosinase activity (IC50= 2.08 ± 0.40 mg/mL), total flavonoid content (9.93 ± 0.02 mg QE/g extract), and antioxidant activity (IC50= 40 ± 0.02 µg/mL). The largest total phenolic concentration was found in the 80% ethanol extract, albeit (11.97 ± 0.55 mg GAE/g extract). Conclusion: Based on its remarkable activities, the dichloromethane extract is recommended for future development in skin-lightening products. The study's findings conclude that PE extracts may be used as an alternate source of antioxidants and anti-tyrosinase agents. [ABSTRACT FROM AUTHOR]

Brittle wort (Chara corallina), a widespread freshwater green macroalga found in southern Thailand, is one of the most widely consumed edible species. Recently, many studies revealed potential of freshwater algae for use as a dietary supplement. This study aimed to screen the phytochemicals and assess the biological activity of C. corallina as an anti-tyrosinase and antioxidant, as well as the total phenolic and flavonoid contents. Samples of C. corallina was extracted using ethanol and distilled water. Crude extracts were screened for the phytochemicals as well as evaluated for total phenolic content, total flavonoid content, antioxidant and anti-tyrosinase activity. The yields of the aqueous and ethanolic crude extracts were 10.84% and 12.27%, respectively. The phytochemical screening of the ethanolic extract revealed the presence of terpenoids, flavonoids, saponins, and alkaloids, whereas anthraquinones, flavonoids, saponins, and alkaloids were identified in the aqueous extract. Aqueous extract had higher total phenolic content (9.3±0.2 mg gallic acid equivalent·mg-1 crude extract) and total flavonoid content (1.9±0.2 mg quercetin equivalent·mg-1 crude extract) compared to ethanolic extract. Through DPPH and ABTS scavenging activities, the biological activities of C. corallina aqueous extract demonstrated its potential as an antioxidant whereby tyrosinase inhibition activities showed an IC50 of 231.6±3.8 µg·mL-1 and 555.8±12.1 and 611.5±8.7 µg·mL-1, respectively. The present study suggests that C. corallina is the potential source of antioxidants and anti-tyrosinase substances and is vital in the development of new skin-lightening substance for the cosmetics industry. [ABSTRACT FROM AUTHOR]

The aim of the present study was to maximize the extraction of gymnemic acid (GA) from Phak Chiang Da (PCD) leaves, an indigenous medicinal plant used for diabetic treatment in Northern Thailand. The goal was to overcome the low concentration of GA in the leaves, which limits its applications among a larger population and develop a process to produce GA-enriched PCD extract powder. The solvent extraction method was employed to extract GA from PCD leaves. The effect of ethanol concentration and extraction temperature were investigated to determine the optimum extraction conditions. A process was developed to produce GA-enriched PCD extract powder, and its properties were characterized. In addition, color analysis (L*, a*, and b*) was performed to evaluate the overall appearance of the PCD extract powder. Antioxidant activity assay was conducted to assess the ability of the PCD extract powder to neutralize DPPH free radicals. The results showed that the concentration of 50% (v/v) ethanol at 70 °C for 2 h resulted in a higher GA concentration of 8307 mg/kg from dried PCD leaves. During the drying process, the use of maltodextrin at a concentration of 0.5% (w/v) was found to produce PCD extract powder with the maximum GA concentration. The color analysis revealed that the PCD extract powder had a dark greenish tint mixed with yellow. The antioxidant activity assay showed that 0.1 g of PCD extract powder was able to neutralize 75.8% of DPPH free radicals. The results concluded that PCD extract powder could potentially be used as a source of nutraceuticals or as a functional food ingredient. These findings suggest the potential value of GA-rich PCD extract powder in various applications in the pharmaceutical, nutraceutical, or food industries. [ABSTRACT FROM AUTHOR]

This work focuses on the development and production of polyurethane foams with antibacterial and anti-inflammatory activities by using natural extracts. The foam dressings will help alleviate the pain patients experience from wound treatment. In this study, mangosteen extract, which has antibacterial properties, was combined with curcumin extract, which has anti-inflammatory and antioxidant properties, to emphasize the importance of Thai herbs as the driving force of the Thailand economy. The three formulations of foam materials, Anti-inflame #1, Anti-inflame #2 and Anti-inflame #3, which contain the components of the natural extracts by using the extracts at various ratios, were investigated. The antibacterial activity results showed that the inhibition zones of Anti-inflame #1 and #3 were 7.25 ± 2.47 and 3.25 ± 0.71 mm, respectively, while Anti-inflame #2 application did not produce an inhibition zone. Anti-inflame #1 and #3 had the best bacterial reduction effects of 99.99% after 24 h. In addition, the toxicity of the foam wound dressings was analysed by studying the survival of L929 cells after 3 days of testing, and all Polyurethane foams (PU) showed survival rates greater than 80%, which was considered safe in this experiment. The antioxidant ability was examined by three methods, DPPH, ABTS and FRAP, and Anti-inflame #3 with a mangosteen to curcumin extract ratio of 1:2 had the highest antioxidant effect, indicating that the developed foam has good properties for use as an antimicrobial wound dressing. Therefore, Anti-inflame #3 would be the optimal material in terms of antibacterial activity and antioxidant potency. [ABSTRACT FROM AUTHOR]

Introduction: Ochna integerrima (Lour.) Merr. belongs to family Ochnaceae, and it is a traditionally important herb in Southeast Asia. The objective of this study was to investigate the phytochemical compounds of various extracts from six samples. Methods: Thin Layer Chromatography (TLC) of the hexane, dichloromethane and 70% ethanol extracts were performed for five important phytochemicals namely, alkaloids, flavonoids, terpene, cardiac glycosides and anthraquinone. Results: Terpene was found in all the samples that were extracted from all extracts, while cardiac glycosides and anthraquinone did not occur in all samples that were extracted from all extracts. Flavonoids were observed in all samples that were only extracted with dichloromethane, whereas it was found in some samples from the other extracts. The hexane extract compound was found in alkaloids in Garcinia cowa and Cryptolepis dubia, while the dichloromethane extract compound was discovered in Suregada multiflora, Capparis micracantha and Salacia chinensis. All samples extracted with 70% methanol did not contain any alkaloid compounds. Terpene was found in the hexane extracted compounds. Conclusions: These findings suggested that Ochna integerrima (Lour.) Merr. is a potent source of medicinal phytochemical compounds that could lead to its use as medicinal products. [ABSTRACT FROM AUTHOR]

This work aimed to evaluate the antioxidant capacities and cytotoxic attributes of Alternanthera sissoo (AS) and Alternanthera bettzickiana Green (AB) which are commonly grown in Thailand, yet not extensively-studied. Dried leaves were extracted by maceration using ethanol for 48 h and ethanolic extract solution was used. Cytotoxic, anti-proliferative, anti-migratory capacities and apoptosis-related gene expressions of AS and AB extracts on MCF-7, HepG2, and HeLa cell lines were investigated using 3-(4,5-dimethylthiazolyl-2)-2, 5-diphenyltetra zolium bromide (MTT) assay, anti-colony formation and wound healing test, respectively. The antioxidant activities by DPPH assay and FRAP assay of AS (130.62±1.61 μg TE/g extract and 24.76 ± 0.54 mg Fe(II)/g extract, respectively) were significantly higher than those of AB (104.34±3.68 μg TE/g extract and 23.13± 0.90 mg Fe(II)/g extract, respectively). Likewise, total phenolic content and the total flavonoid content of AS (7.43±0.39 mg GAE/g and 184.22±3.20 mg RE/g extract, respectively) were significantly higher than AB (6.10±0.29 mg GAE/g extract and 168.07±7.90 mg RE/g extract, respectively). HPLC analysis showed the predominance of myricetin, rutin and ferulic acid. For MCF-7, HepG2 and HeLa, the lowest IC50 values of 48.53 μg/mL, 69.94 μg/mL and 43.98 μg/mL, respectively were found in AS extract at 72 h exposure using MTT assay. Apoptotic bodies, gene expression and protein expressions related to apoptosis were more pronounced in AS treatment. Both AS and AB can be served as local foods with chemopreventive effects against breast, liver and cervical cancers. This work provided a foundation for future pharmacological research on Alternanthera plant extracts. [ABSTRACT FROM AUTHOR]

Cordyceps militaris has been used for treating various diseases, as well as maintaining good overall health. The antibacterial properties of the C. militaris fruiting body and substrate, cultured in Chiang Mai (sample A and B) and Chiang Rai (sample C), Thailand, were investigated in this study. The aqueous and ethanolic extracts of C. militaris exhibited antibacterial activities against Staphylococcus aureus, Pseudomonas aeruginosa, Cutibacterium acnes and methicillin-resistant S. aureus (MRSA) with the MIC/MBC ranging from 3.91 to 31.25 mg/mL. The ethanolic extracts of the fruiting body and substrate from sample B also inhibited all bacterial growth within 2–4 h of treatment. Furthermore, ethanolic extract from sample B showed the highest cordycepin content of 57.42 mg/g extract, whereas the highest adenosine content, 3.78 mg/g extract, was observed in the ethanolic extract from the fruiting body of sample A by HPLC. The ethanolic extracts from sample A also demonstrated the highest antioxidant activity and flavonoid content by 9.50 mg GAE/g extract and 10.59 mg QAE/g extract, respectively. However, the highest phenolic content of 49.04 mg GAE/g extract was found in the aqueous extract of sample A. In addition, the ethanolic extract of sample A at 2 and 4 mg/mL could significantly down-regulate the mecA gene expression in MRSA. Our findings reported the potential of C. militaris extract as a new substance for the treatment of skin pathogenic bacteria infections and an antioxidant agent. [ABSTRACT FROM AUTHOR]

Derris scandens, Albizia procera, and Diospyros rhodocalyx have traditionally been used as herbal remedies for pain relief in Thailand. The ethanolic extracts of these plants obtained by Soxhlet extraction were analyzed by the developed high-performance liquid chromatography-diode-array detection method. Lupeol, the anti-inflammatory triterpene, was selected as a chemical marker for this investigation. All extracts together with that compound were further evaluated for their potential on anti-inflammatory activity using 5-lipoxygenase inhibition assay. Lupeol in each extract was quantified and expressed in the range of 21.44 ± 0.89–40.72 ± 0.40 mg per 100 g of crude drug and the enzyme inhibitory activity of all tested extracts presented as half-maximal inhibitory concentration values ranged between 63.71 ± 2.09 and 91.09 ± 1.40 μg/mL. This study shows that the developed analytical method is effective for analyzing triterpene lupeol in these plants and also reveals the relationship between a lupeol content and the anti-inflammatory effect. [ABSTRACT FROM AUTHOR]

Ya-Tri-Kasornmas and Ya-Tri-Phigut are polyherbal tea that have been listed as essential medicines in the National List of Essential Medicines, Thailand. They are widely consumed among the Thai populace. Thus, aqueous extracts of Ya-Tri-Karsornmas and Ya-Tri-Phigut polyherbal formulations were subjected to screening against oxidative stress promoters such as reactive oxygen species using in vitro antioxidant models. In addition, their capacities to lower lipid peroxidation were measured. Yield of the extract from Ya-Tri-Phigut polyherbal formulation was 7.22% (w/w), while that from Ya-Tri-Kasornmas was 5.50% (w/w) (P < 0.05). The study revealed that the aqueous extract of Ya-Tri-Phigut showed better antioxidant capacities to inhibit reactive oxygen species and lipid peroxidation activities than Ya-Tri-Karsornmas (P <0.05). Thus, Ya-Tri-Phigut polyherbal tea may potentially serve as a rich nutraceutical agent to combat oxidative stress and health related diseases. [ABSTRACT FROM AUTHOR]

Mud lobsters are crustaceans from the genus Thalassina which are lesser known and seldom seen but are nevertheless an important organism to the mangrove ecosystem. In Malaysia and Thailand, mud lobsters are eaten by locals as treatment for asthma. It is traditionally believed that they are effective in reducing the number of asthma attacks and severity of asthma symptoms. However, the therapeutic potential of mud lobster extract remains unclear and has not been fully elucidated or reported in any scientific study. The objectives of this study are to investigate the anti-inflammatory potential of mud lobster, Thalassina anomala extracts (hexane, chloroform and methanol) in lipopolysaccharide (LPS)-stimulated RAW 264.7 macrophages, and to identify the potential bioactive compounds involved. An MTT assay was performed to determine the cytotoxicity of the T. anomala extracts on RAW 264.7 macrophages. Nitrite quantification assay and enzyme-linked immunosorbent assay (ELISA) were conducted to investigate the ability of the T. anomala extracts to suppress the secretion and expression of nitric oxide (NO), Prostaglandin E2 (PGE2) and proinflammatory cytokines (TNF-a, IL-6 and IL-1ß) in LPS-stimulated macrophages. GC-MS analysis was done to identify putative metabolites. The hexane extract of T. anomala showed anti-inflammatory activity by significantly inhibiting the LPS-induced production of NO, PGE2, interleukin- (IL-) 6, IL-1ß and tumour necrosis factor-alpha (TNF-a) in a concentration-dependent manner. Hexane extract treatment with 100 µg/mL has decreased the NO secretion into 37 µM. Meanwhile, hexane extract at concentration of 100 µg/mL able to significantly suppressed PGE2,TNF-a, IL-6 and IL-1ß production into 2015 pg/mL, 2406 pg/mL, 460 pg/mL and 9.6 pg/mL, respectively. GC-MS analysis of the hexane extract revealed the presence of 19 putative compounds. The identified compounds were reported to have anti-inflammatory, antioxidant and antibacterial activities. These results suggest that the hexane extract of T. anomala potentially has anti-inflammatory properties and concentration dependently suppressed NO, PGE2 and proinflammatory cytokines' production in LPS-stimulated macrophages. The findings provide a rational basis of the traditional use of mud lobster for inflammationassociated ailments. [ABSTRACT FROM AUTHOR]

Introduction: Ha-Rak is an herbal recipe that has been stated by Ministry of Public Health, Thailand to utilize as the herbal medicines for the treatment of fever. The recipe comprises the roots of five plants including Capparis micracantha, Clerodendrum indicum, Ficus racemosa, Harrisonia perforata and Tiliacora triandra as its ingredients. Methods: The extracts of Ha-Rak and its five herbal principles were evaluated for their potential on the cytotoxicity against SW620 cancer cell lines using the MTT assay and an active compound, lupeol which was found as a cytotoxic compound in the herbal ingredients of Ha-Rak was further determined. A chromatographic method for investigating that compound in the extracts was developed herein. The analytical method comprised a cholesterol-coated C18 column, a mixture of acetonitrile and methanol (70:30) with a flow rate of 2 mL/min, and a diode-array UV wavelength at 210 nm as a stationary phase, mobile phase, and detector, respectively. Results: The amount of lupeol in the extracts of Ha-Rak and the herbal principles, which possessed cytotoxicity against SW620 cell lines with the IC50 values of 30.10-212.24 µg/mL displayed variously in the range of 4.50-250.62 mg/100g. The difference of the contents among the extracts was noted significantly (P < 0.05). The correlation between the lupeol contents and their cytotoxic performances on the tested cell lines was observed in our investigation. Conclusion: Our findings demonstrated that Ha-Rak recipe contains a promising cytotoxic compound, lupeol and it will support the recipe to subject further pharmacological studies on anticancer activity. [ABSTRACT FROM AUTHOR]

Bambara groundnut (BG), originally from Africa, is widely distributed in Asian countries, especially in southern Thailand, and is used for food and functional foods. There is no report on the use of BG for ethnomedicine or cosmetics. To investigate collagen biosynthesis stimulation and anti-melanogenesis of the BG extracts. The hulls (H) and seeds (S) of BG were collected from Trang province, Thailand and extracted by Soxhlet (S) and maceration (M) using ethanol, and boiled with distilled-water (B). Total phenolic (TPC) and total flavonoid (TFC) contents were quantified. The three antioxidant and tyrosinase inhibition activities were determined by DPPH, FIC and FTC; and the modified dopachrome methods, respectively. The collagen biosynthesis and the anti-melanogenesis activities were investigated by Sirius-Red and the melanin content assay. The yields of BG extracts ranged from 1.72% to 9.06%. The BG-SS extract gave the highest TPC and TFC. The BG-HM extract showed the highest antioxidant activities (SC50 of 0.87 ± 0.02 mg/mL, MC50 of 1.83 ± 0.09 mg/mL and LC50 of 0.70 ± 0.06 mg/mL), tyrosinase inhibition activity (IC50 of 0.45 ± 0.23 mg/mL), and anti-melanogenesis activities (72.9 ± 0.08%), whereas the BG-SB extract exhibited the highest stimulation of collagen biosynthesis (18.04 ± 0.03%). All BG extracts at 0.1 mg/mL showed no cytotoxicity on human dermal fibroblasts. The biological activities of BG extracts might be from their phytochemicals, especially phenolic and flavonoid contents. The BG-HB and BG-HM extracts might be promising novel active sources for anti-aging and whitening cosmeceuticals. [ABSTRACT FROM AUTHOR]

Cnidoscolus chayamansa (Mc Vaugh) is commonly name as "Chaya" or "Mexican spinach", which is high nutritive value food and medicinal plant and use to treat or relieve several diseases by possessed biological activities. There is become favor to cultivate in Thailand and useful in Thai cuisine for noodle soup instead of other seasoning. Aims of this study were to evaluate antioxidant activities of ethanol extract from chaya leaf by DPPH inhibition, lipid peroxidation inhibition and nitric oxide radical scavenging assays; and to evaluate antityrosinase, anti-elastase and cytotoxicity of chaya leaf extract. Fresh leaves were cleaned, air dried, and extracted with 95% ethanol by maceration. Total phenolic content (TPC) and total flavonoid measurements of chaya leaf extract was determined. DPPH, NO radical scavenging and lipid peroxidation inhibition activity of extract was evaluated and compared with ascorbic acid and 1-tocopherol, respectively. TPC contained in ethanol extract of chaya leaves was 14.32±0.59 mg GAE/g, however total flavonoid content was undetected. DPPH and NO radical scavenging activities of chaya leaf extract were poor when compared with ascorbic acid. Therefore, chaya leaf extract was possessed lipid peroxidation inhibition (IC50 = 129.27±7.78 mg/ml) when compared with a-tocopherol. Ethanol extract of chaya leaves was undetermined on anti-tyrosinase and antielastase activities. There was also no cytotoxicity of extract against human dermal fibroblasts. The results may useful data on different of antioxidant assays and other evaluation of biological activities from chaya leaf extract. Non-toxicity of chaya leaf extract was also confirmed in cell culture level. [ABSTRACT FROM AUTHOR]

Geodorum attenuatum has been found in Thailand, China, India and Vietnam, however, the phytochemical composition and antimicrobial activity of G. attenuatum have not been studied yet. In this study, the phytochemical composition of ethanol extract of G. attenuatum tuber was determined using liquid chromatography-mass spectrometry (LC-MS) and evaluated its antibacterial activity of ethanol extract via disk diffusion test. 9 compounds in ethanol extract of G. attenuatum tuber were identified, such as disaccharide, oxoheneicosanoic acid, shikimic acid, chlorogenic acid, 1-Oleoyl-2-acetyl-glycerol, azafrin, 5,6,7-trihydroxyfavone, 2,3- isopropylidene-1-oleoyl-glycerol and trans-docosanoyl ferulate. Moreover, it's been proved that the ethanol extract of G. attenuatum tuber could inhibit the growth of B. cereus, E. coli, P. aeruginosa, S. enteritidis, S. typhimurium, and S. aureus. [ABSTRACT FROM AUTHOR]

The feasibility of the production of germinated rice extracts using indigenous rice from Southern Thailand, including Khemtong (KHT) and Khai Mod Rin (KMR) from a single location at the Pak Phanang River Basin in Nakhon Si Thammarat, was investigated. The nutritional composition and bioactivity of the germinated rice extracts from both cultivars were evaluated. Optimum germination time for both rices was 96 h, leading to the highest GABA, thiamine, free amino acid, total sugar, and α-amylase activity (p<0.05). Germinated KHT had a higher α-amylase activity than germinated KMR at all germination times. Mashing at 60°C/pH 5.5 rendered the extract with the highest GABA content (p<0.05) and desirable contents of other nutrients. In comparison with germinated Sungyod (local colored rice) and Jasmine (commercial Thai rice) extracts, KHT and KMR showed a higher scavenging activity against DPPH•, OH•, and H2O2 (p<0.05) with a comparable ABTS•+ inhibition. For metal chelation, reducing power and ACE inhibitory activity, the germinated Sungyod extract was greater than KHT/KMR. The results demonstrated the potential use of germinated local Thai rice for the production of functional beverages. [ABSTRACT FROM AUTHOR]

Introduction: Clinacanthus nutans (Burm. f.) Lindau, a shrub found in South East Asia, particularly in Malaysia, Thailand, and Indonesia has many potential medicinal uses. It is used as a traditional herbal medicine for treating many diseases including skin rashes. Skin rash often appear in an allergic reaction. Recently, we have shown that C. nutans aqueous extract has the ability to alleviate ovalbumin-induced active systemic anaphylaxis rats from anaphylaxis – the acute form of allergy. This present study is aimed at comparing the ability of ethanolic and aqueous extracts of C. nutans to suppress IgE-mast cell degranulation. Materials and Methods: IgE-presensitized rat basophilic leukemic (RBL-2H3) cells pretreated with C. nutans ethanolic (100% ethanolic, 70% and 50% aqueous ethanolic) or 100% aqueous extracts were challenged with dinitrophenyl-bovine serum albumin to analyze the release of early and late-phase pro-inflammatory mediators. Results: We found that at concentrations of 5 mg/ml and above, C. nutans aqueous extract was able to suppress the levels of β-hexosaminidase and histamine while suppression was not seen in ethanolic extracts pretreated RBL-2H3 cells.Conclusion: Hence, we proposed that C. nutans aqueous extract is more active compared to the ethanolic extracts in suppressing the mediators of IgE-mast cell degranulation. [ABSTRACT FROM AUTHOR]

Cholangiocarcinoma (CCA), the adenocarcinoma of the biliary duct, is commonly reported in Asia with the highest incidence in northeastern Thailand. Chemotherapy of this type of cancer is limited due to the lack of effective chemotherapeutic drugs. A series of previous studies support further research and development of Atractylodes lancea (Thunb) DC. (AL) as a potential candidate for the treatment of CCA as a crude ethanolic extract. In the present study, we aimed to develop an oral pharmaceutical formulation (capsule) of the standardized AL crude ethanolic extract for further clinical development in patients with CCA. Major steps included macroscopic and microscopic authentication of the AL rhizomes, preparation of standardized AL extract, preparation of oral pharmaceutical formulation (capsule) of the standardized AL extract, quantitative and qualitative analysis of the marker compound (atractylodin) in the formulated AL extract, evaluation of contaminations of heavy metals, pesticides residues, and microorganisms in the ground AL rhizomes and the formulated (capsule) powder of AL, physicochemical and pharmaceutical properties of the formulated AL extract/capsule, and cytotoxicity evaluation of the formulated AL extract. Results of all evaluations confirmed satisfactory pharmaceutical properties of oral (capsule) formulation of the standardized AL extract. [ABSTRACT FROM AUTHOR]

Yanang (Tiliacora triandra) is known as vegetable and herbal in the northeast of Thailand. This research was aimed to propose an experimental method for optimizing the encapsulation efficiency and bioactive compounds stability in Yanang leaf extract. The optimized conditions for the encapsulation was indicated as a ratio of core to wall material of 1.60:8.40 with an alginate concentration of 1% (w/v) and 1% (w/v) CaCl2 solution. The results showed that the encapsulation efficiency and bioactivity were mainly effected by the ratio of Yanang leaf extract concentration to alginate concentration. The results revealed that the bioactive compounds were not lost in the encapsulation process. The study of bioactive compounds in encapsulated Yanang leaf extract showed only a slow reduction during storage at 4-10ºC for three months (>50% residual). Moreover, encapsulated Yanang leaf extract was released in the small intestine (pH 7.4) more than in stomach (pH 1.2) at 24 h and in the soft drink model system, the encapsulated Yanang leaf extract showed the highest amount of bioactive compounds at pH 4 and 77ºC for 1 min (high temperature short time: HTST). [ABSTRACT FROM AUTHOR]

Context: Bombax ceiba is belonging to the family Bombacaceae. Dried stamen of this plant is used as vegetable and food ingredients for people in the Northern part of Thailand. There are very few reports on the biological activities in this plant, especially the flower parts. Objectives: The present study aimed to demonstrate the phytochemical screening and in vitro antioxidant and antidiabetic activities of crude extracts from B. ceiba. Materials and Methods: The leaf and flower part of B. ceiba were extracted using different solvents including water, 50% ethanol, and 95% ethanol. The phytochemical constituents were determined using standard qualitative methods. Total phenolic content (TPC) and total flavonoid content (TFC) were analyzed by colorimetric methods. 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical scavenging assay, 2,2-azino-bis-(3-ethylbenzothaizoline-6-sulphonate (ABTS) assay, and ferric reducing antioxidant power (FRAP) assay were used to investigate the in vitro antioxidant and antidiabetic activities of the extracts. For in vitro antidiabetic activities, α-glucosidase and α-amylase inhibitory effects were tested. Results: Phytochemical screening indicated the presence of alkaloids, flavonoids, coumarins, saponins, tannins, terpenoids, and cardiac glycosides in this plant. The highest TPC and TFC were found in 95% ethanol flower extract (2.73 ± 0.064 mg gallic acid equivalent/g and 28.25 ± 2.33 mg quercetin equivalent/g, respectively.). However, the highest antioxidant activity (DPPH and ABTS + assay) was found in 95% ethanol leaf extract (0.012 ± 0.0003, 0.009 ± 0.0005 mg/mL, respectively.) and FRAP assay was found in 95% ethanol flower extract (349.27 ± 35.16 mg trolox equivalent/g). The highest α-glucosidase and α-amylase inhibitory activities were found in 95% ethanol flower extract (0.001 ± 0.0012 and 0.0002 ± 0.0001 mg/mL, respectively). Conclusion: The crude extracts from B. ceiba showed the potent in vitro antioxidant and antidiabetic activities, especially the flower extracts. These findings confirm the ethnobotanical uses of B. ceiba as food and medicinal plants. Further studies on biological and pharmacological activities of this plant in the animal model and clinical trials must be carried out to confirm the use in medical aspects. [ABSTRACT FROM AUTHOR]

Chalong Kwan (C), Khao Mongkol (K) and Chompoo Mameaw (P) are the water-lily in the family of Nymphaeaceae which were planted in Thailand. In this study, leaves (1), flowers (2), tuber (3), pollen (4), branches (5) of the three water-lily were boiled with distilled water (W) and macerated on 95% ethanol (E). The extracts from water-lily including C3-E, P1-E, P3-E, C1-W, P1-W, P3-W, and P5-W were showed the highest level of free radical scavenging activities measured by (DPPH) assay (SC50 range of 0.003-0.007), which is more than L-ascorbic acid (SC50 of 0.013 ± 0.0001 mg/mL) about four times. The effect of anti-diabetic was determined inhibitory activities of a-glucosidase and a-amylase by enzymatic assay. P4-E extract was the highest exhibited the a-amylase activities (AC50 of 0.02 ± 0.001 mg/mL) with higher than acarbose for ten times (AC50 of 0.23 ± 0.14 mg/mL). Whereas, the C2-E, C3-E, and C1-W extracts inhibited the activity of a-glucosidase (GC50 range of 0.08-0.11), which higher than acarbose for 6 times (GC50 of 0.63 ± 0.04 mg/mL). The ethanol extracts from Chompoo Mameaw (P1-E and P3-E) which demonstrated the highest antioxidant and anti-diabetic activity, might be possible for further development to natural products for diabetic patients. [ABSTRACT FROM AUTHOR]

Context: Dolichandrone serrulata flowers are widely used as vegetables in northern and eastern Thailand. However, there is no report on the toxicities of this plant. Objective: The present study was aimed to determine the acute toxicity of aqueous flower extracts from D. serrulata in ICR mice. Materials and Methods: The extract at dose of 1000, 1500, and 2000 mg/kg was orally administered once to mice in order to investigate an acute toxicity. Results: The extract did not produce any sign or symptom of toxicity. Dead mouse was not found within the first 24 h and for further 14 days. The body weight increased in comparison to the controls. However, the relative organ weight between the treated and control mice was not different. The hematological values were not altered by the treatment of the extracts. The liver function parameters including aspartate aminotransferase, alanine aminotransferase, and alkaline phosphatase among treated mice were not different. The extract did not alter the kidney function parameters (blood urea nitrogen and creatinine). The lipid profiles in treated mice were not changed in comparison to the controls. In addition, histopathological features of the liver and kidney are not altered by the administration of the extracts. Conclusion: The results demonstrated that the maximum dose of D. serrulata flower extracts (2000 mg/kg) does not cause the acute toxicity in male and female mice. [ABSTRACT FROM AUTHOR]

Purpose: The ethanol extracts from seven Thai plants, Kaempferia parviflora, Stemona tuberosa Lour., Ananas comosus, Punica granatum, Musa sapientum L., Pseuderanthemum palatiferum and Annona muricata L., which are traditionally used in Thailand to support human health, were evaluated for their anti-Plasmodium and anti-Toxoplasma activities, and for their cytotoxicities against human foreskin fibroblasts in vitro. Results: The K. parviflora, P. palatiferum and A. muricata extracts were active against P. falciparum (3D7) with selectivity index (SI) values > 10, while their half maximal inhibitory concentrations (IC50) were 28.7 µg/ml, 78.8 µg/ml and 46.1 µg/ml, respectively. Extracts from K. parviflora and M. sapientum (ripe fruit peel) inhibited T. gondii (RH) growth with IC50 values of 53.5 µg/ml and 90.4 µg/ml, respectively. The SI values of the extracts from K. parviflora and M. sapientum (ripe fruit peel) were 9.0 and 10.8, respectively. Conclusion: Our data show that some of the aforementioned ethanol extracts are potential sources of new drugs to treat Plasmodium and Toxoplasma infections. [ABSTRACT FROM AUTHOR]

The leaves of Sauropus androgynus (L.) Merr. have been traditionally used in Malaysia, Thailand and Indonesia as food and herbal product for various medicinal purposes. It is worth noting that different concentrations of metabolites in herbal medicine, cultivated in several different geographic locations, may result in different therapeutic effects. The present study was aimed to identify the metabolic profiles of S. androgynus extracts. This is the first report on metabolomic study of S. androgynus leaf extracts from six different geographic locations. S. androgynus leaf extracts from twelve samples were subjected to study the metabolic fingerprinting using Gas Chromatography - Mass Spectroscopy (GC-MS) method. S. androgynus data from various locations were grouped and classified by Principle Component Analysis (PCA) and Cluster Analysis, respectively. The samples from Purwosari alone was merged into one group or a cluster and the other samples were merged into the other cluster, while samples from East Surabaya and Trenggalek showed the close relationship in score plot of PCA and in the dendrogram. Metabolic fingerprinting of S. androgynus by GC-MS shows clearly that S. androgynus leaf extracts from several various different geographic locations contain many biologically active compounds in various concentrations. [ABSTRACT FROM AUTHOR]

• Bioactive compounds are influenced by plant parts and regions of plant growth. • Rhizome show extensive array of TLC fingerprints compared to other plant parts. • Rhizome extracts demonstrate significant antioxidant and antibacterial activity. • Root and rhizome show great capacity to inhibit lipoxygenase enzyme. This research involved surveying and collecting 16 samples of Arundina graminifolia from 8 different subpopulation areas. The main objectives were to analyze the preliminary phytochemical fingerprints and biological activity of the crude extracts obtained from various parts of the plant (roots, rhizomes, stems, and leaves). The findings indicated that rhizome extracts generally yielded a higher percentage of crude extract compared to the dry plant weight in comparison to other plant parts. Moreover, the Thin layer chromatography (TLC) fingerprint data revealed distinct compositions for each part of the plant, with rhizomes exhibiting more prevalent bands of compounds than other parts. Regarding antioxidant activity, the root and rhizome crude extracts from various populations displayed stronger inhibitory activity against DPPH, ABTS, and FRAP methods compared to stems and leaves. High total phenolic content was also found to effectively inhibit free radicals. The lipoxygenase inhibition test, which serves as an in vitro anti-inflammatory activity evaluation, demonstrated that most root extracts exhibited higher lipoxygenase inhibitory activity than the rhizome extracts at a concentration of 0.1 mg/mL. The antibacterial activity demonstrated that rhizome extracts from different regions exerted lower MIC and MBC values against all tested bacteria compared to the root extracts. The findings offer valuable information for selecting specific populations of A. graminifolia as potential sources of bioactive compounds for future nutraceutical applications. [ABSTRACT FROM AUTHOR]

The chemical constituents of the essential oil from the leaves of Gynura divaricata (L.) DC. were investigated by GC-FID and GC-MS. Seventeen compounds, representing 97.1% of the chromatographical fraction of the oil, were detected. The major constituents, cubenol (65.7%) and spathulenol (6.4%), were isolated using column chromatography and identified by NMR and MS analysis. The antioxidant, cytotoxicity and antimicrobial activities of the essential oil, the hexane, dichloromethane and methanol extracts of G. divaricata leaves were investigated. The essential oil and the crude extracts showed antioxidant activity using the ABTS and DPPH methods, respectively. The essential oil exhibited significant cytotoxicity against KB, MCF-7 and NCI-H187 cancer cell lines with the IC values of 5.79, 47.44 and 17.65 µg/mL, respectively and had a MIC of 50 µg/mL against Mycobacterium tuberculosis H37Ra. Cubenol had an IC50 value of 45.37 µg/mL against the NCI-H187 cancer cell line. All extracts were non-cytotoxic against Vero cells. The essential oil and the extracts showed antimicrobial activity using the disc diffusion assay. The methanol extract was the most potent of the three extracts. [ABSTRACT FROM AUTHOR]

Thirty six organic extracts were prepared from eighteen marine sponges collected from the Andaman Sea, Thailand. The extracts were examined for anti-malaria, anti-Microbacterium tuberculosis, anti-herpes simplex virus, antimicrobial, anti-acetylcholinesterase enzyme and cytotoxic activities. Four extracts showed anti-M. tuberculosis, one anti-malarial, twenty four antimicrobial and one extract exhibited cytotoxic activity. However, anti-acetylcholinesterase enzyme and anti-herpes simplex virus type 1 (HSV-1) activities were not recorded. Dichloromethane extracts prepared from Axinyssa sp., Halichondria sp. and Chondrosia reticulata exhibited potential anti-M. tuberculosis at MIC 50, 100 and 200 mg/mL, respectively. The Hexane part of Phakellia ventilabrum extract showed anti-malarial activity (MIC= 2.8 mg/mL) while the dichloromethane extract showed anti-M. tuberculosis and cytotoxic activity with MIC 200 and IC50 7.1 mg/mL, respectively. Antimicrobial activity was found in both the hexane and dichloromethane parts of extracts. [ABSTRACT FROM AUTHOR]

Twenty-two methanol and chloroform crude extracts from Guttiferae (Hypericum hookerianum Wight & Arn; Garcinia speciosa Wall; Garcinia xanthochymus Hook. F. ex T. Anderson; Cratoxylum formosum subsp. pruniflorum (Kurz) Gogel; and Calophyllum polyanthum Wall ex Choisy) and Schisandraceae families (Schisandra verruculosa Gagnap) collected from the northern region of Thailand were tested for antiproliferative activity on B16F10 (melanoma), HeLa (cervical carcinoma), and KB (epidermoid carcinoma) human cancer cell lines using the sulforhodamine-B (SRB) binding assay. All crude extracts showed an interesting antiproliferative activity with a dose-response relationship. The chloroform extract from leaves of G. speciosa was the most potent in inhibiting cancer cell growth with the GI50 of 4, 6.6, and 3.7 µg/mL in HeLa, KB, and B16F10 cell lines, which were 13-, 20- and 142-fold less potent than doxurubicin, respectively. The information from this study can explain the use of these plants in Thai traditional medicine and suggests the potential for further development of these extracts to new pharmaceuticals. [ABSTRACT FROM AUTHOR]

Ethnopharmacological Relevance: Rhizomes from members of Zingiberaceae have long been used in Thai traditional medicine to treat cutaneous fungal infections, including Malassezia-related skin disorders. Alpinia galanga, Curcuma longa, Zingiber cassumunar, and Zingiber officinale are particularly popular in folk remedies., Aim of the Study: On account of the application background in traditional medicine, the present study aims to screen and determine the composition and possible mechanism of the rhizome extracts of selected Zingiberaceae and corresponding fractions against M. furfur., Materials and Methods: All solvent extracts (ethanol, methanol, and n-hexane) obtained from each plant were screened for anti-Malassezia activity by agar disc diffusion assay. The MIC and MFC values of the potent rhizome extract and its bioactive fraction isolated by TLC were determined using broth dilution assay followed by chemical characterization using GC-MS. The anti-Malassezia mechanism was investigated by macroscopic and microscopic observation of cells grown in the yeast phase and hyphal phase., Results: The primary screening results showed that the n-hexane extract from A. galanga possessed the most significant anti-Malassezia activity. The MIC and MFC values of this extract were in a range of 0.04-0.08 mg/mL and 0.04-0.16 mg/mL, respectively. The TLC purification of the n-hexane extract from A. galanga gave a total of nine fractions, of which only a single exhibited anti-Malassezia activity. The GC-MS analysis of the rhizome extract and the derivative fraction revealed that the major constituents were (2,6-dimethylphenyl)borate followed by a trace content of 1,8-cineol and hydrocarbons. For the antifungal mechanism of the fraction, treatments of the fraction led to morphological changes in cell size and shape, exerted massive vacuoles in yeast form, and inhibited the transition to hyphae but not likely affected chitin contents of the cell wall of M. furfur., Conclusions: According to the results, the n-hexane extract of A. galanga rhizome exhibits promising anti-Malassezia potential. The inhibitory effect on virulent hyphal growth supports that A. galanga is a valuable source of natural antifungal agents for further pharmaceutical research., (Copyright © 2021 Elsevier B.V. All rights reserved.)