Table 4.
Total phenolics, R(DPPH) values, coefficients and analysis of variance of the fit function that was obtained by non-linear regression analysis in DPPH radical scavenging assay
| Total phenolics (mg GAE/kg) | R2 | Adj. R2 | y0 | A | B | P value | R(DPPH) (s−1) | |
|---|---|---|---|---|---|---|---|---|
| Chardonnay | 46.60 ± 3.24d | 0.9998 | 0.9997 | 15.4703 | 84.5297 | 132.8727 | <0.0001 | −0.5901 |
| Merlot | 80.68 ± 3.97b | 0.9993 | 0.9992 | 11.4689 | 88.5311 | 99.5213 | <0.0001 | −0.8045 |
| Carbernet Sauvignon | 98.19 ± 0.02a | 0.9983 | 0.9981 | 14.9319 | 85.0681 | 88.7868 | <0.0001 | −0.8561 |
| Vitis amurensis | 86.69 ± 6.53b | 0.9998 | 0.9998 | 5.5587 | 94.4413 | 52.0916 | <0.0001 | −1.4963 |
| Vitis davidii | 66.88 ± 2.05c | 0.9987 | 0.9986 | 10.6741 | 89.3259 | 67.9326 | <0.0001 | −1.1349 |
* Different letters in the same column indicate significant difference (P < 0.05)