The content of CPT and VCS-LT could be improved to 4.88%, 21.52%, respectively from 0.379%, 1.524% in crude extract solution after refined by X-5 resin. Then the refined solution was chromatographically separated with...The content of CPT and VCS-LT could be improved to 4.88%, 21.52%, respectively from 0.379%, 1.524% in crude extract solution after refined by X-5 resin. Then the refined solution was chromatographically separated with hypercrosslinked resin and the contents of VCS-LT could be improved to about 60%(CPT 15%). The achromaticity needle crystal was obtained after several recrystallization and its structure was confirmed by IR, 1H NMR, 13C NMR, MS and element analysis.展开更多
DM 130 macro porous adsorptive resin was used to extract flavonoid glycosides from leaching solution and some factors affecting the adsorption efficiency were examined. The optimum technological conditions as follows:...DM 130 macro porous adsorptive resin was used to extract flavonoid glycosides from leaching solution and some factors affecting the adsorption efficiency were examined. The optimum technological conditions as follows:pH=5, mass ratio of liquid to solid 15 in adsorption and 70% ethanol as eluting agent. Resin could be regenerated after every three time uses. The content of flavonoids glycosides in extracts was about 24%.展开更多
文摘The content of CPT and VCS-LT could be improved to 4.88%, 21.52%, respectively from 0.379%, 1.524% in crude extract solution after refined by X-5 resin. Then the refined solution was chromatographically separated with hypercrosslinked resin and the contents of VCS-LT could be improved to about 60%(CPT 15%). The achromaticity needle crystal was obtained after several recrystallization and its structure was confirmed by IR, 1H NMR, 13C NMR, MS and element analysis.
文摘DM 130 macro porous adsorptive resin was used to extract flavonoid glycosides from leaching solution and some factors affecting the adsorption efficiency were examined. The optimum technological conditions as follows:pH=5, mass ratio of liquid to solid 15 in adsorption and 70% ethanol as eluting agent. Resin could be regenerated after every three time uses. The content of flavonoids glycosides in extracts was about 24%.
