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Principal component analysis (PCA) applied to different biological activities of eight pomegranate peel extracts obtained from samples P1–P8: (a) score plot and (b) loading plot when total phenolic content and antioxidant activity were used as variables; (c) score plot and (d) loading plot when antiproliferative activity was used as variables; (e) score plot and (f) loading plot when antimicrobial activity was used as variables.
