Table 3.
DPPH and ORAC antioxidant activities for plum samples under acid and neutral extraction conditions.
| Sample | DPPH IC50 (μg/mL) 1,2 |
ORAC (mmol TE/g Extract)1,3 |
||
|---|---|---|---|---|
| Acid Extraction | Neutral Extraction | Acid Extraction | Neutral Extraction | |
| Methley | ||||
| Skin | 7.59 ab,* ± 0.28 | 5.79 a,# ± 0.13 | 9.23 a,^ ± 0.31 | 10.91 b,& ± 0.07 |
| Flesh | 6.81 bc,* ± 0.24 | 4.39 b,# ± 0.15 | 8.74 ab,^ ± 0.13 | 12.22 a,& ± 0.17 |
| Pisardii | ||||
| Skin | 12.72 d,* ± 0.20 | 8.57 c,# ± 0.24 | 7.45 cd,^ ± 0.11 | 9.71 c,& ± 0.31 |
| Flesh | 12.44 d,* ± 0.35 | 8.17 c,# ± 0.25 | 7.04 d,^ ± 0.13 | 9.76 c,& ± 0.44 |
| Satsuma | ||||
| Skin | 6.73 c,* ± 0.17 | 4.85 b,# ± 0.04 | 8.53 b,^ ± 0.18 | 12.55 a,& ± 0.40 |
| Flesh | 8.40 a,* ± 0.20 | 4.96 b,# ± 0.15 | 7.79 c,^ ± 0.15 | 10.05 bc,& ± 0.07 |
1 Values are expressed as the mean ± S.D. 2,3 Different superscript letters in the same column or different superscript signs in the same row indicate that the DPPH IC50 or ORAC differences are significant at p < 0.05 using one-way analysis of variance (ANOVA) with a Tukey post hoc statistical test.