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. 2020 Mar 24;9(3):378. doi: 10.3390/foods9030378

Figure 4.

Figure 4

Partial least square regression-discriminant analysis (PLS-DA) score plots of LV1 vs. LV2 for (a) coffee set of samples 1, (b) coffee set of samples 2, and (c) coffee set of samples 3, when using chromatographic fingerprints to classify coffee samples according to their region of origin.