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zhangliming

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[求助] 小极性甾体皂苷富集

我现在做的课题是关于某植物中甾体皂苷富集工艺研究,植物中的含量只有0.1%,甾体皂苷上连接的是去氧糖,极性很小,经萃取,醇沉、柱层析后总皂苷依然只有30%,HPLC和ELSD上看图谱比较干净了,但是达不到要求,大家还有什么好的方法吗?
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