文献类型：期刊文献

中文题名：新鲜银杏叶经微波辅助提取后微观结构的变化

英文题名：Changes in ultrastructure of fresh leaves of Ginkgo biloba after microwave-assisted extraction

作者：郝金玉[1];韩伟[1];邓修[1]

机构：[1]华东理工大学化学工程研究所,上海200237

年份：2002

卷号：33

期号：8

起止页码：739

中文期刊名：中草药

外文期刊名：Chinese Traditional and Herbal Drugs

收录：CSTPCD;;Scopus;北大核心:【北大核心2000】；CSCD:【CSCD2011_2012】；

基金：国家自然科学基金资助项目 (2 0 0 0 60 0 3 ) ;化学工程联合国家重点实验室资助项目 (99-0 3 )

语种：中文

中文关键词：银杏叶;微观结构;微波辅助提取;微波萃取;透射电子显微镜

外文关键词：microwave assisted extraction; microwave extraction; Ginkgo biloba L.; transmission electron microscope; mechanism

摘要：目的　研究微波辅助溶剂萃取对植物微观结构的破坏 ,并探讨微波辅助提取的机制。方法　以新鲜银杏叶片为原料 ,借助透射电子显微镜 ,观察细胞结构。结果　在微波、溶剂或热的作用下 ,植物细胞的结构都会发生较为明显的变化 ,主要表现在有质壁分离现象 ,细胞器、淀粉粒等胞内物质被破坏。但微波辅助溶剂提取和传统的热提取都没有使细胞壁破裂。结论　微波的作用会导致银杏叶细胞结构的松散 ,但不足以使细胞壁破裂。
Object To study the ultrastructure destruction of plants in the process of microwave assisted solvent extracion and its mechanism.Methods Cell structures of fresh leaves of Ginkgo biloba L. were observed by transmission electron microscpoe.Results The cell structure changed when the leaves were under microwave radiation or soaked by solvents or heated, such as plasmoysis, destruction of cell organellaes, disappearance of starch grain and so on, while the cell wall was not broken both in microwave assisted solvent extraction and in traditional heating extraction.Conclusion Microwave radiation could lead to the relaxation of the cell structures, but not be enough to make the cell wall broken.