Based on low content of active ingredients of Chinese herb, and the principle of supercritical dilute solution extractionand the fundamental principle of solvent extraction, we prepared the extract of ginkgo biloba L. as experimental material toinvestigate the effect of ratio of liquid to solid material, extraction temperature and extraction time on pre-treatment of supercriticalCO2 extracting and crystallizing ginkgolides via single factor experiments. The results showed with that 20 times more volumesol...
【基金】
国家自然科学基金项目(29976008)
【分类号】
TQ461
【正文快照】
我国自古以来就有以银杏(ginkgo biloba L.)为药的记载。银杏中主要存在两类活性物质:萜内酯类化合物(ginkgolides and bilobalide)和黄酮苷类化合物(flavonoidglycosides)[1]。银杏叶中所含萜内酯主要是银杏内酯(Ginkgolide)A、B、C(简写GA、GB、GC)和白果内酯(Bilobalide,简?
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