Discrimination of Salvia miltiorrhiza Bunge from Different Geographical Locations Employing High-Performance Liquid Chromatography, Near-Infrared Fingerprinting Combined with Chemometrics

Figure 8

Statistical analyses of samples based on HPLC data. (a) A presentation of chance permutation at 200 times used for the discrimination between the two groups [R² = (0.0, 0.104), Q² = (0.0, −0.449)]; (b) OPLS-DA score plot of saffron samples from four different geographical locations [R²Y (cum) = 0.835 and Q²Y (cum) = 0.811]; (c) VIP plot for samples based on PLS-DA.

(a)

(b)

(c)