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Principal component analysis (PCA) scores plot of aroma signals of different types of chocolate enriched with different freeze-dried phenolic-rich plant powders: DCH (square), DCH98S (triangle), DCH98ESt (diamond) and MCH (dot). Blueberries (BLUB—blue), raspberries (RASB—pink), blackberries (BLCB—dark blue), pomegranates pomace (POME—violet), beetroots (BEET—dark red), control (CONT—gray).
