[Quality evaluation of American ginseng using UPLC coupled with multivariate analysis].

An ultra performance liquid chromatography (UPLC)method combined with multivariate data analysis was developed to evaluate the quality of American ginseng by simultaneously determining the concentrations of six ginsenosides (Rg₁, Re, Rb₁, Rc, Ro and Rd)in the samples. For UPLC, acetonitrile with 0.01% formic acid and water with 0.

[Determination of Ginsenosides Amount and Geographical Origins of Ginseng by NIR Spectroscopy].

In the study, 74 samples of ginseng were harvested from three provinces located in the northeast of China. Method for the quantification of total amount of ginsenosides Rg1, Rb1, and Re in samples with near infrared (NIR) spectroscopy was developed with the application of partial least squares regression (PLSR). The reference analysis was performed using a UPLC method.