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Principal component analysis (PCA) of nutritional (ascorbic acid, total phenolic and carotenoid contents), antioxidant (FRAP and DPPH), and physicochemical (pH, total soluble solid, clarity, and color) properties of fruit juices during a 7-day simulated home-refrigerated storage at 4 °C. Each spot represents one independent biological replicate. PCA was performed using a web-based tool MetaboAnalyst 4.0.
