Variation of Phenolics (Bound and Free), Minerals, and Antioxidant Activity of Twenty-Eight Wild Edible Fruits of Twenty-Three Species from Far North Region of Cameroon

Figure 3

Principal component analysis (PCA) means showing the relationship among total polyphenols (free and bound), total flavonoids (free and bound), total tannins (free and bound), and antioxidant activities. (a) Correlation between variables and factors and (b) biplot of fruit distribution according to their polyphenolic contents and antioxidant activities. PPi: bound polyphenols; FLi: bound flavonoids; TTi: bound tannins; ABTSi: ABTS activity of the bound phenolic compounds; DPPHi: DPPH activity of the bound phenolic compounds; FRAPi: FRAP activity of the bound phenolic compounds; PPs: free polyphenols; FLs: free flavonoids; TTs: free tannins; ABTSs: ABTS activity of the free phenolic compounds; DPPHs: DPPH activity of the free phenolic compounds; FRAPs: FRAP of the free phenolic compounds; TA: total anthocyanins. Blue color indicates different samples.

(a)

(b)