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. Author manuscript; available in PMC: 2013 Sep 4.
Published in final edited form as: J AOAC Int. 2012 Nov-Dec;95(6):1579–1587. doi: 10.5740/jaoacint.12-096

Figure 3.

Figure 3

Relative peak areas: (A) PCA score plots based on the relative peak areas for the Ginkgo biloba supplements in Figure 2 with two principal components, (B) PCA score plots with three principal components, and (C) Q residuals versus Hotelling T2 for SIMCA based on a PCA model for relative peak areas of the authentic supplements. (•) authentic supplements and (∇) adulterated supplements. Each point represents the average of 3 repeat analyses.