Natural antioxidants from bee products.

DANERT F.C., ZAMPINI I.C., ORDOñEZ R.M., MALDONADO L., BEDASCARRASBURE E., ISLA M.I.

Tafi del Valle. Tucuman

Jornada; XXII Jornadas Cientificas. Asociacion de Biologia de Tucuman.; 2011

The aim of this study was determine the antioxidant capacity of propolis from two phytogeographic region of Argentina: Santiago del Estero (SE) and Chaco (CHA). Phenolic compounds and flavonoid content were determined in Gallic acid equivalent (GAE/ml) and quercetin equivalent (QE), respectively. Different in vitro assays were used to determine the free radical scavenging activity and inhibitory activity on B-carotene bleaching (linoleic acid/B-carotene).The scavenging concentration of 50% of free radical (SC50) was calculated. All propolis extracts have showed free radical scavenging activity with SC50 values lower than 10 and 1 ug GAE/ml for SE propolis and CHA propolis, respectively. Also, the propolis extract have showed scavenging capacity on HO• with SC50 values of 100 ug GAE/ml and showed protect activity of lipid against oxidation. According with the obtained results, the propolis from SE and CHA could be used as functional food to delete stress oxidative and as food protection.