Synthesis of gelatin-PVA adsorbent and its application in the separation of ginkgo flavonol glycosides and terpene lactones
Synthesis of gelatin-PVA adsorbent and its application in the separation of ginkgo flavonol glycosides and terpene lactones
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DOI：
10.1016/s1381-5148(00)00059-6
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发表时间：
2001-01-01
影响因子：
5.1
通讯作者：
He, BL
中科院分区：
文献类型：
--
作者：
Xu, MC;Shi, ZQ;He, BL
以明胶和聚乙烯醇（PVA）为原料，制备了戊二醛交联的球形吸附剂，并研究了其对银杏黄酮苷和萜内酯的吸附选择性。具有适当明胶含量的吸附剂可以选择性地吸附黄酮醇糖苷，其主要基于氢键相互作用具有高吸附容量，而对萜烯内酯仅显示出相当低的吸附容量。从吸附等温线计算出黄酮醇苷的吸附亲和力远高于萜烯。由此建立了银杏叶中银杏黄酮醇苷和萜内酯的简单分离工艺，分别得到了黄酮醇苷含量高达60%、萜内酯含量低至0.2%的富集提取物和萜内酯含量高达30%的提取物。(C)2001爱思唯尔科技有限公司。保留所有权利。
Spherical adsorbents derived from the glutaraldehyde cross-linked hybrid of gelatin and polyvinyl alcohol (PVA) were synthesized, and their adsorption selectivity for ginkgo flavonol glycosides and terpene lactones was also investigated in detail. An adsorbent with an appropriate gelatin content can selectively adsorb flavonol glycosides with a high adsorption capacity based mainly on hydrogen bond interactions, while showing only a fairly low adsorption capacity for terpene lactones. A much higher adsorption affinity of flavonol glycosides than that of terpene was calculated from the adsorption isotherms. Thus, a simple preparative separation procedure for ginkgo flavonol glycosides and terpene lactones from a ginkgo leaf was established, An enriched extract containing flavonol glycosides of up to 60% and terpene lactones as low as 0.2% and an extract with a terpene lactones content up to 30% was prepared by this method, respectively. (C) 2001 Elsevier Science B.V. All rights reserved.