AI Article Synopsis
- * The Relative Standard Deviation (RSD) values for most glycosides ranged from 1.1% to 4.6%, indicating good precision, although two compounds had RSD values over 5%.
- * Results suggest that the G. biloba reference extract can effectively serve as a substitute for individual reference substances when measuring specific flavonol glycosides.
Article Abstract
Six flavonol glycosides were isolated and calibrated from Ginkgo biloba extract, and then used to calibrate the content in 2 baiches of G. biloba reference extract, so was rutin. RSD values of rutin, kaempferol-3-O-rutinoside, kaempferol-3-O-rhamnoside-2-glu- coside, quercetin-3-O-rhamnop-yranosyl-2-O-(6-O-p-coumaroyl)-glucoside, kaempferol-3-O-rhamnopyranosyl-2-O-(6-O-p-coum-aroyl) - glucoside were around 1.1%-4.6%, nevertheless, RSD values of quercetin-3-O-glucoside and isorhamnetin-3-O-rutinoside were more than 5%. According to the results, the reference extract of G. biloba can be used as the substitute to determine rutin, kaempferol-3-O- rutinoside, kaempferol-3-O-rhamnoside-2-glucoside, quercetin-3-O-rhamnopyranosyl-2-O-(6-O-p-coumaroyl)-glucoside and kaempferol-3-0-rhamnopyranosyl-2-O-(6-O-p-coumaroyl)-glucoside instead of corresponding reference substances. So reference extract in place of single component reference in assay is feasible.
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