Table 4.
Free radical scavenging ability of five regions of IPPO.
| Ningqiang | Xuancheng | Xingyi | Mianyang | Liangshan | |
|---|---|---|---|---|---|
| ABTS (μmol TE/100 g) | 387.88 ± 2.37 a | 240.45 ± 5.95 c | 353.19 ± 5.95 b | 177.82 ± 4.74 d | 241.23 ± 2.37 c |
| DPPH (μmol TE/100 g) | 288.01 ± 3.74 a | 227.62 ± 8.65 c | 278.10 ± 1.87 b | 149.30 ± 6.49 d | 226.44 ± 0.71 c |
| FRAP (μmol TE/100 g) | 259.38 ± 7.81 b | 194.06 ± 2.5 c | 280.94 ± 1.88 a | 133.13 ± 1.56 d | 199.69 ± 1.25 c |
| ORAC(μmol TE/100 g) | 204.24 ± 1.63 ab | 190.22 ± 6.78 c | 212.37 ± 0.16 a | 200.67 ± 5.13 bc | 95.77 ± 9.60 d |
Each value is expressed as the mean ± standard deviation (n = 3). Superscripts with different letter in the same row was statistically significant (p < 0.05). ABTS, 2,2′-diazobis (3-ethyl benzothiazoline -6-sulfonic acid) diammonium salt free radical scavenging capacity; DPPH, 2,2-diphenyl-1-trinitrohydrazine free radical scavenging capacity; FRAP, reduction antioxidant potential of ferric iron; ORAC, oxygen free radical absorption capacity.