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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