Antioxidant activity of the extract
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The entire plants of Lycopodiella cernua L. are utilized in Vietnam and China as traditional herbal medicine due to their anti-inflammatory activity and neuroprotective effect. In this current research, four dihydrobenzofuran neolignan derivatives (1–4) have been purified from the ethanol extract of L. cernua.
7p viwalton 02-07-2024 1 1 Download
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Lichens, formed by the symbiosis of fungi and algae or cyanobacteria, are increasingly recognized for their potential medicinal properties, including their potential to treat type 2 diabetes. Many studies have shown that the bioactive metabolites of lichens originate from their fungal partners. This study isolated the mycobiont from a Graphis lichen sample and investigated the antioxidant and α-glucosidase inhibitory activity of its ethyl acetate extract.
10p visergeyne 18-06-2024 2 0 Download
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This study is the first report on antioxidant activities and chemical composition of S. cambodianum Baill. ethanolic leaf extract. The results showed that ethanolic extract had potent in vitro antioxidant activities in DPPH, ABTS•+ assays (the low concentrations of IC50 were 19.51 ± 0.78 μg/mL and 4.89 ± 0.07 μg/mL, respectively), and in RP, TAC methods (the Abs0.5 were 20.80 ± 0.26 μg/mL and 36.15 ± 1.03 μg/mL).
7p dianmotminh02 03-05-2024 5 1 Download
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Isaria cicadae, currently identified as Paecilomyces cicadae (Miq.) Samson (Cordycipitaceae, Hypocreales, Ascomycetes), is a parasitic fungus on cicadas and is considered a folk medicine in traditional medicine. In this research, the antioxidant activity of some extracts from the biomass and fruit bodies of Isaria cicadae F0004 isolated in Vietnam was investigated.
13p dianmotminh02 03-05-2024 4 1 Download
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Seven known compounds, including two neolignans, four lignans, and one flavane were isolated from the methanol extract of Pandanus tonkinenis fruits. Their structures were determined to be ficusal, vladinol F, medioresinol, syringaresinol, lariciresinol, secoisolariciresinol, and luteoliflavan by analysis of MS and NMR data as well as by comparison of their spectral data with those reported in the literature.
7p dianmotminh02 03-05-2024 3 1 Download
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In order to explore the importance of the Antheroporum genus in pharmaceutical applications, two bioactivities of A. harmandii plant extracts have been evaluated in this study. Antimicrobial and antioxidant activities of A. harmandii extracts will provide evidences for further chemical composition studies to detect new bioactive compounds from this species.
9p dianmotminh02 03-05-2024 4 1 Download
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The methanol extracts as well as some compounds from this plant exhibited anti-inflammatory, antimicrobial activity, antioxidant, hepatoprotective and anti-cancer effect, and antiosteoporotic. On going to search for bioactive components from the Vietnamese plant, this paper reported the isolation of seven phenolic compounds including one new from the aerial parts of A. ilicifolius. The cytotoxic activity of the isolates against two cancer cell lines (HepG2 and SK-LU1) were also screened and reported herein.
5p dianmotminh02 03-05-2024 6 1 Download
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Zoanthid is a potential natural resource with many biological activities, such as antioxidant, antiviral, antiinflammatory, and cytotoxic activity. Therefore, this study aimed to evaluate the antioxidant activity of 70% ethanol crude extract and dichloromethane fraction from Zoanthus vietnamensis. The total polyphenol content of ethanol and dichloromethane extracts were 19.36 ± 1.37 and 24.95 ± 0.63 mg GAE/g extract, respectively.
9p dianmotminh02 03-05-2024 4 1 Download
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Photocatalytic degradation proficiency was studied for bromothymol blue dye. Phytochemicals-coated Nickel Oxide nanoparticles demonstrated antibacterial properties against bacteria (gram negative strain of E. coli, Pseudomonas spp. and gram positive strain of Bacillus spp.) by showing highest zone of inhibition (19 mm, 22 mm, 15 mm).the antioxidant activity of the synthesized nanoparticles were also examined and the result show that the fabricated nanoparticles exhibited significant radical scavenging activity.
10p dianmotminh02 03-05-2024 5 2 Download
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This study was designed to extract a high yield of polysaccharides from the M. smilacifolium trunk and characterize it. As a result, the maximum yield of the polysaccharides of 5.13 ± 0.05% was obtained with an extraction time of three hours, extraction temperature of 100 oC, the ratio of water to sample of 1:50 as extraction solution, extraction number of times 3, and the ratio of ethanol to extract volume 5:1 (v/v).
9p viritesh 02-04-2024 6 1 Download
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Hypericum sampsonii or Sampson’s St John’s Wort is a species of flowering plant in the Hypericaceae family. Our previous study revealed the diverse and bioactive chemical constituents of the plant. This study investigates the antioxidant activity and potential hepatoprotective of Hypericum sampsonii extract (BLD1 extract) in vitro and in vivo.
7p vilarry 12-03-2024 8 1 Download
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Bruguiera parviflora belongs to Bruguiera genus, which possesses several biological activities such as antidiabetic, antiinflammatory, and antioxidant. Phytochemical investigation of the ethyl acetate extract from Bruguiera parviflora leaves was carried out bioassay-guided isolation and obtained three known compounds, namely kochioside A (1), oleanolic acid (2) and quercitrin (3).
8p vibego 02-02-2024 1 0 Download
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Diabetes is a type of metabolic disorder, which is the cause of many dangerous complications. Ensete glaucum (Musaceae family) has active ingredients with antioxidant and hypoglycemic characteristics in some parts of the plant. This study investigates the ability to reduce blood sugar based on the inhibition of αamylase and α-glucosidase enzymes of Ensete glaucum stem extract.
13p vigojek 02-02-2024 2 1 Download
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The aim of this study is to assess how different extraction temperatures affect the in vitro antioxidant potential of polysaccharides derived from the leaves of Myxopyrum smilacifolium.
5p viplato 02-01-2024 7 2 Download
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To investigate the influence of the banana ripening stage on the change in the content of bioactive components and their bioactivities, ripening stages of porcelain banana peels were screened for the total phenolic content (TPC) and antioxidant activities using three methods, including DPPH scavenging assay, ferric reducing/antioxidant power (FRAP) assay, and inhibition of polyphenol oxidase activity (PPO assay).
9p vimichaelfaraday 28-12-2023 11 3 Download
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The flowers of Hylocereus undatus (Haw.) Britton & Rose have been reported in vitro antioxidant and tyrosinase inhibitory activities. This study screened preliminarily the triterpenoid constituents and evaluated in vitro tyrosinase inhibitory activity of H. undatus flowers. H. undatus flowers were harvested from Binh Thuan Province, Vietnam at four different flowering stages, and their five separated parts (stamen, pistil, petals, ovary, and sepals) were extracted with ethanol.
7p vikissinger 21-12-2023 3 1 Download
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The present experiment is aimed to evaluate the hepatoprotective effects of purslane (PuE) and fig leaves (FlE) extracts on diclofenac-sodium (DS) induced hepatotoxicity in rats. Adult male rats were pretreated orally with PuE and FlE extracts at a dose of 10ml/kg and 200mg/kg body weight, respectively for 14 days. Co-treatment of DS 16mg/kg body weight was given orally for 7days.
7p viisac 23-09-2023 2 1 Download
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The content of total polyphenols, DNA damage protective effect, and antioxidant activity of different solvent extracts including hexane, acetidin (ethyl acetate), acetone, ethanol, and methanol) from Garcinia mangostana pericarp were investigated and compared.
6p viisac 23-09-2023 2 1 Download
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In this research, a set of experiments was carried out for identifying the optimum conditions of independent variables affecting phenolic content extraction efficiency and antioxidant activity of soybean seeds (Glycine max L.).
6p viisac 23-09-2023 3 1 Download
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Tamarind (Tamarindus indica) has long been known for its high nutrition content and pharmacological potential. However, there is lack of studies on the content of antioxidants, phenolic and flavonoid contents of tamarind seed grown in Vietnam.
13p vimulcahy 18-09-2023 7 3 Download