Ultraviolet-Visible Spectroscopy and Chemometric Strategy Enable the Classification and Detection of Expired Antimalarial Herbal Medicinal Product in Ghana

<div>PCA score plot for training set data. A score plot for PC1 (37.51%) vs. PC2 (26.38%) vs. PC3 (18.74%). HMP1—red circles, HMP2—purple squares, HMP3—green diamonds, HMP4—red pentagrams, and HMP5—blue triangles. Training and validation data are represented by hollow and filled markers, respectively.</div>

International Journal of Analytical Chemistry

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Figure 3

Figure 3: Ultraviolet-Visible Spectroscopy and Chemometric Strategy Enable the Classification and Detection of Expired Antimalarial Herbal Medicinal Product in Ghana 

Figure 3 | Ultraviolet-Visible Spectroscopy and Chemometric Strategy Enable the Classification and Detection of Expired Antimalarial Herbal Medicinal Product in Ghana 