Table 2. Binary and ternary combinations of phenolic acids that are present in mango and their ability to neutralize the °DPPH after 3 minutes of reaction.
| Antioxidant | Phenolic acids involved in neutralization | |||||
|---|---|---|---|---|---|---|
| Mixture phenolic acid + DPPH | Mechanism | capacity relative to weighted average | Gallic | Protocatechuic | Chlorogenic | Vanillic |
| Gallic and Protocatechuic | HAT-SET | SYN +++ | ✓ | |||
| Gallic and Chlorogenic | HAT-SET | SYN ++ | ✓ | ✓ | ||
| Gallic and Vanillic | HAT | ANT + | ✓ | |||
| Protocatechuic and Chlorogenic | SET-SET | SYN +++ | ✓ | |||
| Protocatechuic and Vanillic | SET | SYN + | ✓ | |||
| Chlorogenic and Vanillic | SET | SYN + | ✓ | |||
| Gallic, Protocatechuic and Chlorogenic | HAT-SET-SET | SYN + | ✓ | ✓ | ||
| Gallic, Protocatechuic and Vanillic | HAT-SET | SYN ++ | ✓ | |||
| Gallic, Chlorogenic and Vanillic | HAT-SET | SYN +++ | ✓ | ✓ | ||
| Protocatechuic, Chlorogenic and Vanillic | SET-SET | ANT + | ✓ | |||
| Gallic, Protocatechuic, Chlorogenic and Vainillic | HAT-SET-SET | SYN ++ | ✓ | ✓ | ||
SYN-synergism, the actual antioxidant capacity of the mixture is greater than the weighted average of the antioxidant capacity of each phenolic acid. ANT–antagonism, the actual antioxidant capacity of the mixture is less than the weighted average of the antioxidant capacity of each phenolic acid. +, ++, +++ -indicates the intensity of increase of the antioxidant activity according the phenol combination used.