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. 2021 Aug 30;11(9):585. doi: 10.3390/metabo11090585

Figure 2.

Figure 2

Permutation plots of the PLS model describing the R2 and Q2 Y-intercepts for NO inhibitory (a), ABTS (b), and DPPH (c) activities of 50 indigenous plant extracts. The PLS model was validated using 200 permutation tests to evaluate its goodness of fit and predictive power.