Fig. 6. Stability of quercetin glycosides in vacuum impregnated and freeze dried apple chips during storage with two temperature conditions (n ¼ 3), black dots (dotted line) depict
quercetin-3-O-galactoside); dark gray upward triangles (dotted line) depict quercetin-3-O-glucoside; gray diamonds (solid line) depict quercetin-3-O-xyloside; grey downward
triangles (solid line) depict quercetin-3-O-arabinoside; black squares (dotted line) depict quercetin-3-O-rhamnoside; grey dots (solid line) depict quercetin.