Table 1. Phenolic
contents in different extracts (A, B and C) from apple skin. |
Apple variety |
Extract |
Phenolic compounds |
||
Totals |
Flavonoids |
Non-Flavonoids |
||
Granny Smith |
A |
6.80* ± 0.15 |
6.69 ± 0.50 |
0.11 ± 0.09 |
B |
5.08 ± 0.08 |
4.96 ± 0.50 |
0.12 ± 0.04 |
|
C |
3.02 ± 0.08 |
2.89 ± 0.25 |
0.13 ± 0.10 |
|
Royal Gala |
A |
3.49 ± 0.14 |
3.27 ± 0.30 |
0.22 ± 0.02 |
B |
1.99 ± 0.08 |
1.78 ± 0.15 |
0.21 ± 0.05 |
|
C |
2.60 ± 0.13 |
2.31 ± 0.18 |
0.29 ± 0.16 |
*
mgGAE/g, A: acetone: water: acetic acid, B: ethyl acetate: methanol:
water, C: ethanol: water. |
|