Studies on factors influencing on ephedrine contents in Maxing Shigan decoction

Objective: To investigate the factors influencing on the ephedrine contents in different compositions of Maxingshigan decoction.Method: Adopt mixed uniform design to dismantle recipes,employ the stepping regression analysis to deal with experimental statistics,use the partial correlational analysis to analyze the correlation coefficients and the results were validated.Result: The regressive equation was of significance,that is Y=4.367 193 47+7.752 707 437X1+1.255 719 704 1X3(r=0.855 64,P=0.018 9).The main influencing factors on ephedrine content in Maxingshigan decoction were gypsum and amygdalin.The influent factor of amygdalin on ephedrine content had great significance,and gypsum had significance.Conclusion: The collective effects of amygdalin and gypsum affect the content of ephedrine in Maxing Shigan decoction which the content-effect relationship was in direct correlation.