| quercitrin | <chemistry> A glucoside extracted from the bark of the oak (Quercus) as a bitter citron-yellow crystalline substance, used as a pigment and called quercitron. Origin: Cf. F. Quercitrin. See Quercitron. Source: Websters Dictionary (01 Mar 1998) |
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| quercitrin glycosidase | <enzyme> Induced in cultured cell-free microbial preparations from human feces; quercitrin hydrolysed to quercetin Registry number: EC 3.2.1.- (26 Jun 1999) |