Thirty-seven China wines, produced from different geographical origins, were examined in this study. The antioxidant activity of wines was measured by different analytical methods: oxygen radical absorbance capacity (ORAC), reducing power, 2,2-azino-di-(3-ethylbenzothialozine-sulphonic acid) (ABTS), 2,2diphenyl-1-picrylhydrazyl (DPPH ), hydroxyl radical-scavenger activity, superoxide radical-sc...

nitric oxide (no) is a bioactive molecule, which was found to have several physiological roles, including antioxidant. to have a better understanding of the effects of no concentrations (0, 0.1 and 0.2 mm) on germination, growth, photosynthetic pigments, lipid peroxidation and antioxidant activity of basil (ocimum basilicum l.) under different salinity concentrations (0, 100 and 200 mm of nacl)...

in the present study, we have reported the total phenolic content, total flavonoid content, antioxidant and antimicrobial activity of aerial parts of salvia leriifolia extracts and fractions. methanolic, n-hexane, chloroform, and ethyl acetate extracts were screened to analysis their antioxidant activities by four complementary test systems, namely dpph free radical scavenging activity (rsa), t...

—All vertebrates must contend with an increase in oxidative stress during intense exercise. Birds, in particular, may be exposed to increased oxidative stress during long-distance migration, and dietary antioxidants are likely important in alleviating the deleterious effects associated with such a stressor. We evaluated whether fruit selection by birds at a migratory stopover site in southern N...

The aim of this study was to evaluate the antioxidant and antigenotoxic activities of chloroform, ethyl acetate and n-butanol fractions obtained from Gentiana asclepiadea L. roots methanolic extract. The main secondary metabolites sweroside, swertiamarin and gentiopicrine were quantified in G. asclepiadea root extracts using HPLC-DAD analysis. Amount of total phenols, flavonoids, flavonols and ...

To elucidate the effects of cultivar and harvest month on the phenolic content and antioxidant activity of mulberry leaves, four major phenolics, including chlorogenic acid (ChA), benzoic acid (BeA), rutin (Rut) and astragalin (Ast), were quantified using an HPLC-UV method. Leaves from six mulberry cultivars, collected from April to October, were analyzed. The antioxidant activity of mulberry l...

Baccharis trimera is a plant popularly used as a tea and to treat gastrointestinal diseases and inflammatory processes as well. The total phenolic content was determined and the antioxidant and anti-inflammatory activities of six extracts (dichloromethane, ethyl acetate, butanol, aqueous, saponin and phenolic) from B. trimera were evaluated. Using carrageenan-induced pleurisy as a model of acut...

The effects of extracting solvents (dichloromethane, ethyl acetate and methanol) on the valerenic acid content and antioxidant activity of roots extracts of Valeriana jatamansi (cultivated and wild) were investigated. The tested plant extracts contained appreciable amounts of valerenic acid content which affects the antioxidant potential of plant extracts. Higher concentration of valerenic acid...

Tea is one of the most widely consumed beverages all over the world due to its beneficial health effects and special flavor and taste. Tagetes erecta, Telosma minor, Ixora coccinea, Nelumbo nucifera, Antigonon leptopus, Hibiscus rosa-sinensis, Bougainvillea glabra and Senna siamea are used as traditional edible and medicinal materials in Thailand. In this study, the total phenolic content and a...

This study investigates the influence of extraction system on the extractability of polyphenol compounds and antioxidant activity of various medicinal plants. Oxygen radical absorbance capacity (ORAC) and total polyphenol content of 25 Bulgarian medicinal plants subjected to water or 80 % acetone extractions were investigated and compared. The type of extragent significantly influenced the effi...