Table 2.
Total phenolics, DPPH radical scavenging activity, and reducing power in petioles and leaves of six sweet potato varieties
Variety | Total phenolics (g CAE/100 g FW) | DPPH-scavenging (EC50, mg/mL) | Reducing power (EC50, mg/mL) | |||
---|---|---|---|---|---|---|
Petioles | Leaves | Petioles | Leaves | Petioles | Leaves | |
Danjami | 0.07 ± 0.01b | 1.16 ± 0.12c | 2.26 ± 0.33a | 0.25 ± 0.01b | 4.68 ± 0.13ab | 0.51 ± 0.01b |
Hayanmi | 0.07 ± 0.01b | 1.29 ± 0.09c | 2.08 ± 0.09a | 0.17 ± 0.01c | 2.51 ± 0.02c | 0.42 ± 0.00c |
Hogammi | 0.07 ± 0.00b | 0.65 ± 0.07d | 2.31 ± 0.09a | 0.40 ± 0.02a | 4.64 ± 0.07b | 0.77 ± 0.03a |
Jinyulmi | 0.14 ± 0.02a | 1.91 ± 0.03a | 1.94 ± 0.32a | 0.13 ± 0.00d | 2.59 ± 0.03c | 0.37 ± 0.01cd |
Poongwonmi | 0.09 ± 0.01b | 1.60 ± 0.12b | 1.94 ± 0.32a | 0.13 ± 0.01d | 2.51 ± 0.02c | 0.35 ± 0.01d |
Yeonjami | 0.07 ± 0.01b | 1.54 ± 0.11b | 2.15 ± 0.12a | 0.18 ± 0.01c | 4.82 ± 0.14a | 0.37 ± 0.07cd |
Total phenolics are expressed as a chlorogenic acid equivalent (CAE). FW means fresh weight. EC50 was obtained by interpolating from a linear regression analysis. Each value is expressed as mean ± standard deviation (n = 3). Values with different letters in a column are significantly different (P < 0.05)