热带作物学报2017，Vol.38Issue(4)：723-727,5.DOI:10.3969/j.issn.1000-2561.2017.04.021
超声波辅助3种溶剂分析测定杜仲胶含量
Eucommia-rubber Analysis from Eucommia ulmoides Oliver Using Three Solvents Assisted Sonication
摘要
Abstract
The trans-1,4-polyisoprene rubber produced by Eucommia ulmoides Oliver (Eucommia-rubber),which consists of different molecular sizes of polymers polymerized from the isoprene units,mainly accumulates in the cell gaps and is difficult to extract.To develop an effective method for the analysis of eucommia-rubber from E.ulmoides,the winged perianths were used as the material,and six pressing methods comprised three kinds of organic solvents,chloroform,petroleum ether and toluene assisted sonication were tested.The extraction efficiency was evaluated by the extraction rate and the molecular weight distribution of extracted eucommia-rubber.The results showed that using chloroform as the organic solvent,the extraction rate was 7.47％,which was significant higher than others,and using chloroform assisted sonication,a quantity of small and big molecular of eucommia-rubber could be more efficiently dissolved and extracted,reflecting that its molecular weight distribution index was up to 9.99.Our research would supply a favorable technique for the extraction and analysis of trans-polyisoprene rubber.关键词
杜仲/杜仲胶/反式-1,4-聚异戊二烯/有机溶剂/索氏提取法/分子量分布/凝胶渗透色谱Key words
Eucommia ulmoides/eucommia-rubber/trans-polyisoprene/organic solvent/soxhlet extraction/molecular weight distribution/gel permeation chromatography分类
农业科技引用本文复制引用
刘祥,刘淑瑛,虎娟,张虹,张自萍,陈任..超声波辅助3种溶剂分析测定杜仲胶含量[J].热带作物学报,2017,38(4):723-727,5.基金项目
国家自然科学基金(No.31460062). （No.31460062）
