| Autor: |
Piang-Siong, William, De Caro, Pascale, Marvilliers, Arnaud, Chasseray, Xavier, Payet, Bertrand, Illien, Bertrand |
| Přispěvatelé: |
Sing, Alain Shum Cheong |
| Jazyk: |
angličtina |
| Rok vydání: |
2017 |
| Předmět: |
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| Zdroj: |
Food Chemistry (214), 447-452. (2017) |
| Popis: |
The antioxidant properties of trans-aconitic acid (TAA) alone or in the presence of usual antioxidants were assessed by DPPH center dot assay. The IC50 value equal to 70 mM was very high compared to usual antioxidants (vitamin C and trolox). A joint experimental/theoretical study suggested that hydrogen atom abstraction in TAA by DPPH center dot was located on -CH2- methylene bridge because the corresponding radical was more stabilized than COO center dot and C=C-center dot radicals. In combination with antioxidants (vitamin C, gallic acid, caffeic acid, trolox), synergy or additivity effects were noticed. The magnitude of the synergistic effect varied between 1.06 and 1.24 depending on the type and concentration of antioxidant for a concentration of TM equal to 22.3 mM. Especially, the addition of TAA at a concentration below 32 mM to a solution containing 20 mu M of vitamin C had a synergy effect. Beyond this concentration, TAA showed an additive effect. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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