Analysis on chemical constituents in Tibetan medicine Zuozhudaxi by GC-MS
AIM To analyze the chemical constituents in Tibetan medicine Zuozhudaxi (Myristica fragrans,Aucklandia lappa,Crocus sativus,etc.) by GC-MS.METHODS After this drug was ultrasonic extracted with methanol,the chemical constituents were analyzed by GC-MS,whose relative contents were calculated by area normalization method.Then the results were analyzed by intuitive analysis,principal component analysis and cluster analysis.RESULTS Nine batches of Zuozhudaxi samples could be divided into four gruops.There were nineteen constituents having obvious content difference in this drug.Among them,oleic acid,myristic acid,elemicin,entspathulenol,eremanthin,eudesma-5,11 (13)-dien-8,12-olide and dehydrosaussurea lactone were characteristic constituents.CONCLUSION There is a big difference among Zuozhudaxi samples from four manufacturers,so the quality standards for this drug and its raw medicinal materials should be further improved.