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K, kaempferol; K1, kaempferol 3-O-xyloside; K2, kaempferol 3-O-arabinoside; K3, kaempferol 3-O-rhamnoside; Q1, quercetin 3-O-galactoside; Q5, quercetin 3-O-rhamnoside; C1, cyanidin 3-O-galactoside. a Bars = 200 μm. b Data are presented as mean ± SE (n = 5); different letters above the bars indicate statistically significant differences at P < 0.01, LSD
