作 者：
Jie MI;Xingguo Zhang;Cheng Fang-xu;Liu WanCang;Shi Fen
单 位：
Engineering , Southwest Jiaotong University , Chengdu , Sichuan 610031, China );Engineering , Southwest Jiaotong University , Chengdu , Sichuan 610031, China
关键词：
emodin;extraction technology;mount emei;cuspidatum;method;extracte
摘 要：
[Objective] The study was to investigate the yield and the content of the emodin extracts from Polygonum cuspidatum in Mount Emei.[Method] Using the content and purity of emodin as the indices,we employed the 95% ethanol-water-saturated chloroform method to isolate emodin,alkaline of different pH gradient to extract and HPLC to measure the emodin content.[Result] The emodin content in crude emodin extract reached 94.90%,and the yield of emodin extracted from P.cuspidatum was 0.62%.[Conclusion] The 95% ethanol-chloroform method has stable extraction technology and performs high purity of emodin extracted from P.cuspidatum,which could be used as the extraction technology.The results provided a scientific basis for the exploitation,utilization and quality control of P.cuspidatum resource in Mount Emei.
