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Table 2 Amounts of constituents in the studied ethanol extracts

From: Polyphenols profile and antioxidant activity of skin and pulp of a rare apple from Marche region (Italy)

Constituent Skin extract mg/100 mg (RSD) Pulp extract mg/100 mg (RSD) Skin mg/100 g (RSD) Pulp mg/100 g (RSD)
Chlorogenic acid 1.53 ± 0.01 (0.33) 0.37 ± 0.01 (0.25) 49.82 ± 0.17 (0.33) 13.63 ± 0.04 (0.29)
cyanidin-3-O-galactoside 0.41 ± 0.03 (0.67) 0.017 ± 0.001 (0.94) 13.37 ± 0.09 (0.67) 0.63 ± 0.01 (0.94)
rutin 0.13 ± 0.01 (1.16) - 4.07 ± 0.06 (1.55) -
hyperoside + quercetin-3-O-glycoside 1.85 ± 0.01 (0.36) - 59.9 ± 0.13 (0.21) -
quercetin-3-O-pentoside 0.34 ± 0.03 (0.49) - 10.96 ± 0.04 (0.34) -
quercetin-3-O-pentoside 0.69 ± 0.01 (0.75) - 22.56 ± 0.24 (1.06) -
quercitrin [quercetin-3-O-rhamnoside] 0.38 ± 0.01 (0.38) - 12.33 ± 0.05 (0.41) -
Total Flavonols (RSD) 3.38 ± 0.01 (0.38) - 109.83 ± 0.41 (0.38) -
Dimer (1) 0.42 ± 0.01 (1.07) - 13.76 ± 0.15 (1.07) -
Trimer (2) 0.71 ± 0.02 (3.61) - 23.15 ± 0.83 (3.61) -
Catechin (4) 0.96 ± 0.02 (1.74) - 31.34 ± 0.54 (1.74) -
Epicatechin (6) 1.97 ± 0.06 (3.19) - 63.42 ± 1.79 (2.82) -
Trimer (7) 0.81 ± 0.02 (2.33) - 26.30 ± 0.61 (2.33) -
Trimer (8) 1.50 ± 0.03 (1.89) - 48.62 ± 0.92 (1.89) -
Tetramer (9) 1.25 ± 0.01 (0.46) - 40.63 ± 0.19 (0.46) -
Total catechins (RSD) 7.61 ± 0.08 (1.03) - 247.21 ± 2.55 (1.03) -
TOTAL POLYPHENOLS    420.2