نتایج جستجو برای: flavans
تعداد نتایج: 37 فیلتر نتایج به سال:
A botanical extract (Regrapex-R) prepared from whole grape (Vitis vinifera) and Polygonum cuspidatum, which contains polyphenols, including flavans, anthocyanins, emodin, and resveratrol, exhibited dose-dependent scavenging effects on reactive oxygen species (ROS). The extract inhibited increases of ROS and protein carbonyl in isolated rat liver mitochondria following exposure to 2,2'-azobis (2...
Objective: Alchornea floribunda leaves are widely used in ethnomedicine for the management of immuno-inflammatory disorders. We investigated the in vivo and in vitro antioxidant activity of the leaf extract, fractions and isolated compounds of A. floribunda.Materials and Methods: The ethyl acetate fraction of the methanol leaf extract was subjected to several chromatographic separations to isol...
Inflammation in joint: The liberation of phospholipids from cell membranes represents the first step of inflammation cascade. By action of phospholipase A2 is split of the arachidonic acid. Free arachidonic acid is than metabolised by two enzymes: 5-lipooxygenase and 2-cyclooxygenase to generate the group of prostanoids and leukotrienes which are the first active proinflammation compounds, star...
Gambir (asen'yaku in Japanese), an aqueous extract of leaves and young twigs of Uncaria gambir Roxb., has traditionally been used as a treatment for diarrhea and dysentery as an internal medicine and for sore throat as a gargle. Although it is a pharmacopoeic medicine in Japan, the quantitative evaluation of its constituents has not yet been adopted in the Japanese pharmacopoeia. We analyzed po...
Two flavonoids were isolated by performing column chromatographic separation of methanol extract of ariel parts of Derris brevipes (Benth) Baker. Structural elucidation of purified compounds was done on the basis of spectral analysis using IR, 1 H NMR, 13 C NMR 2D NMR spectroscopy and Mass spectrometry. The structures of the flavonoids were elucidated as 2’, 4’-dihydroxy-4-methoxy-3’prenylchalc...
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