Portal de Periódicos da CAPES

Canolol: A Promising Chemical Agent against Oxidative Stress

2011; American Chemical Society; Volume: 115; Issue: 26 Linguagem: Inglês

10.1021/jp2022105

1520-6106

Annia Galano, Misaela Francisco‐Márquez, J. Raúl Alvarez‐Idaboy,

Genomics, phytochemicals, and oxidative stress

The OOH radical scavenging activity of canolol (CNL) has been studied in aqueous and lipid solutions, using the density functional theory. CNL is predicted to react about 3.6 times faster in aqueous solution than in lipid media. The overall rate coefficients are predicted to be 2.5 × 10(6) and 6.8 × 10(5) M(-1) s(-1), respectively. The OOH radical scavenger activity of canolol is predicted to be similar to that of carotenes, higher than that of allicin, and much higher than that of melatonin. Branching ratios for the different channels of reaction are reported for the first time. It was found that the reactivity of canolol toward OOH radicals takes place almost exclusively by H atom transfer from the phenolic moiety in canolol, regardless of the polarity of the environment. Taking into account that the reactivity of peroxyl radicals is significantly lower than that of other reactive oxygen species, canolol is proposed to be a very good antioxidant.