versión On-line ISSN 0718-0462
AVELLO, Marcia y SUWALSKY, Mario. Radicales libres, antioxidantes naturales y mecanismos de protección. Atenea (Concepc.) [online]. 2006, n.494, pp. 161-172. ISSN 0718-0462. http://dx.doi.org/10.4067/S0718-04622006000200010.
Actual evidences affirm that free radicals and the oxygen reactive species involved play a central role in our homeostatic balance. The chemical reactions of free radicals take place constantly in the cells and they are necessary for human health, but the process must be controlled with an adequate antioxidant protection. Among the antioxidants that are ingested in the diet, vitamins and phenolic compounds are prominent because they neutralize the radical species through several mechanisms. These species that can be found in the plasma may stabilize reactive oxygen species, preventing reactions that can generate more deleterious molecules. Ingestion of antioxidants through the diet is of special importance, as well as to avoid risk factors that induce oxidative reactions in our bodies
Palabras llave : Free radicals; antioxidants; polyphenols.