Assessing the Quality of Calyx of Physalis alkekengi L. var. franchetii Based on Quantitative Analysis of Q-Marker Combined with Chemometrics and Machine Learning Algorithms

Figure 2

(a) 2D plot of PCA scores of PALF (G1: the samples are brightly colored and almost free of moths and mold; G2: the samples are brown or dark brown, with varying degrees of mold, and eaten by moths). (b) Results of PCA of G2 (g1: the sample is dark brown, moldy, or severely moth-eaten; g2: the sample is light brown with slight mildew or is moth-eaten).