Comparison of Chemical Constituents in Pseudostellariae Radix with Different Dosage Forms Based on HPLC-Q-Exactive Orbitrap/MS Combined with Multivariate Statistical Analysis

Figure 3

PLS-DA scores plot and the permutation test with 200 permutations of PR decoction pieces and formula granules. The scores plot of PLS-DA revealed that PR decoction pieces and PR formula granules could be clearly distinguished into two groups in the positive mode (a) and negative mode (c). The permutation test with 200 permutations indicated that PLS-DA is effective and can be used for subsequent differential component analysis in the positive mode (b) and negative mode (d).

(a)

(b)

(c)

(d)