Study on Tanshinone Extracted from Salvia miltiorrhiza Bge.Dregs
[Objective]The aim was to extract tanshinone from Salvia miltiorrhiza Bge.dregs and to determine tanshinone components.[Method]Organic solvent method was adopted to extract tanshinone from S.miltiorrhiza dregs and TLC was used to determine the optimum extraction solvent.The components of tanshinone were measured with HPLC[Result]Ether was the best solvent to extract tanshinone from S.miltiorrhiza dregs.After water immersion,dry dregs of S.rniltiorrhiza and Panax notoginseng ware extracted with ethanol to obtain fat-soluble extracts.Then with ether as the solvent for Soxhlet extraction,the yield of crude tanshinone was 2.17%.The HPLC detection showed that the contents of tanshinone Ⅱ A,methylene tanshinquinone,cryptotanshinone,tanshinone Ⅰ were 3.62%,1.02%,2.56%,2.75% respectively.[Coaclusioa]The components of tanshinone in S.miltiorrhiza dregs were basically the same as tanshinone in medicine S.miltiorrhiza.S.miltiorrhiza dregs could be used as a kind of tanshinone resource,which has the value of development and utilization.