from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A particular flavonol, 2-(3,4-dihydroxyphenyl)-3,7-dihydroxychromen-4-one, found in several plants
from the GNU version of the Collaborative International Dictionary of English
- n. A yellow crystalline substance extracted from fustet, and regarded as its essential coloring principle; -- called also fisetic acid.
from The Century Dictionary and Cyclopedia
- n. In chem., a yellow crystalline coloring matter to which the formula C15H10O6 has been given, obtained from the Rhus cotinus, or Hungarian fustic.
Sorry, no etymologies found.
A new flavone glycoside isolated and characterized as fisetin - 4-O - glucoside; rutin, quercetin, quercetrin and astralgin also isolated a new lignan - nirphyllin and a new neolignan - phyllnirurin - from aerial parts.
Naringin, quercetin, and phloretin moderately inhibited uptake by 30% while rutin and fisetin had no effect.
We have found that some other flavonoids, e.g. apigenin, fisetin, hesperetin and chalcone also can inhibit both CTL generation and effector function, with the effective concentration varying with the specific flavonoid tested.
Among the flavonoids tested, fisetin, quercetin, myricetin, kaempferol, morin, (+/-) - taxifolin, (+) - catechin, and (-) - epicatechin were shown to be highly effective in inhibiting the reverse transcriptase activity.
For Longevity genes example, grapes with fungal infections release various polyphenolic compounds (quercetin, fisetin, apigenin and resveratrol to name a few) called phytoalexins.
(+) - catechin, morin, fisetin, chrysin, and 3-hydroxyflavone, all showed varying extents of inhibition of the nonenzymatic lipid peroxidation, induced by either ascorbic acid or ferrous sulfate.