Research Article
Relevance and Standardization of In Vitro Antioxidant Assays: ABTS, DPPH, and Folin–Ciocalteu
Table 2
Number of exchanged electrons (
) per OH group in different antioxidant assays.
| Sample | /OH | DPPH | ABTS | FC | MeOH | H2O | pH 5 | pH 7.4 | H2O | pH 5 | pH 7.4 |
| CA | 1.1 | 1.1 | 1.1 | 3.1 | 1.2 | 1.1 | 1.2 | 2.9 | CGA | 1.0 | 1.1 | 1.2 | 3.1 | 1.0 | 1.1 | 1.5 | 3.8 | GA | 1.8 | 2.1 | 2.1 | 1.7 | 2.1 | 2.7 | 3.5 | 1.9 | CTH | 0.8 | 1.0 | 1.4 | 2.1 | 1.4 | 1.7 | 2.0 | 2.3 | EGCG | 1.2 | 1.3 | 1.4 | 2.0 | 1.1 | 1.4 | 1.9 | 1.5 | AA | 0.9 | 0.9 | 0.9 | 1.0 | 0.9 | 0.9 | 0.9 | 2.1 | Trolox | 1.8 | 1.9 | 1.9 | 1.9 | 1.8 | 1.8 | 1.7 | 2.2 |
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