Objective:Authentication is vital to the reduction of the misuse of Panax species due to their extensive array of uses and similarities between species.However,the current authentication approach is time-consuming,lab...Objective:Authentication is vital to the reduction of the misuse of Panax species due to their extensive array of uses and similarities between species.However,the current authentication approach is time-consuming,laborious,and costly.The aim of this study is to discriminate the botanical origins of five species in Panax genus by a rapid and simple approach.Methods:Here,an electronic tongue(E-tongue)was applied to discriminate the botanical origins of five species of Panax,i.e.,Panax quinquefolius,Panax japonicus,P.japonicus var.major,Panax zingiberensis,and Panax notoginseng(representative high-,middle-,and low-latitude plants),and the four geographical origins of P.japonicus and P.japonicus var.major plants.Data preprocessing methods,including principal component analysis(PCA),hierarchical cluster analysis(HCA),and linear discriminant analysis(LDA),were used.Results:Three models can discriminate five species of Panax genus and four plants of P.japonicus and P.japonicus var.major from different geographical origins.LDA was superior to PCA and HCA in terms of satisfactory classification.Conclusion:The findings confirmed the potential of the E-tongue for performing rapid,simple,and cost-effective discrimination via LDA.展开更多
基金supported by the National Natural Science Foundation of China(NO.81473315)National Science and Technology Fundamental Resources Investigation Program of China(2018FY100701)+2 种基金Sichuan Province Science and Technology Plan Project(2018JZ0028)the Open Research Fund of Chengdu University of Traditional Chinese Medicine Key Laboratory of Systematic Research of Distinctive Chinese Medicine Resources in Southwest China(003109034001)CAMS Innovation Fund for Medical Sciences(no:2016-I2M-3-015)。
文摘Objective:Authentication is vital to the reduction of the misuse of Panax species due to their extensive array of uses and similarities between species.However,the current authentication approach is time-consuming,laborious,and costly.The aim of this study is to discriminate the botanical origins of five species in Panax genus by a rapid and simple approach.Methods:Here,an electronic tongue(E-tongue)was applied to discriminate the botanical origins of five species of Panax,i.e.,Panax quinquefolius,Panax japonicus,P.japonicus var.major,Panax zingiberensis,and Panax notoginseng(representative high-,middle-,and low-latitude plants),and the four geographical origins of P.japonicus and P.japonicus var.major plants.Data preprocessing methods,including principal component analysis(PCA),hierarchical cluster analysis(HCA),and linear discriminant analysis(LDA),were used.Results:Three models can discriminate five species of Panax genus and four plants of P.japonicus and P.japonicus var.major from different geographical origins.LDA was superior to PCA and HCA in terms of satisfactory classification.Conclusion:The findings confirmed the potential of the E-tongue for performing rapid,simple,and cost-effective discrimination via LDA.
