Affiliation:
1. 1Department of Biological Sciences, Concordia University, Sir George Williams Campus, Montreal, Canada
Abstract
Abstract The cell-free extracts of peel, root, or callus tissues of citrus catalyzed the stepwise O-methylation of quercetin to rhamnetin, isorhamnetin and rhamnazin. Both rhamnetin and isorhamnetin were further methylated to rhamnazin and possibly to a trimethyl ether derivative of quercetin. The results seem to indicate the existence of both meta and para directing enzymes that are involved in the biosynthesis of methylated flavonoids in citrus tissues.
Subject
General Biochemistry, Genetics and Molecular Biology
Cited by
16 articles.
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