Abstract

ORTIZ-ROBLEDO, Faviola et al. Avenanthramides and nutritional components of four mexican oat (Avena sativa L.) varieties. Agrociencia [online]. 2013, vol.47, n.3, pp.225-232. ISSN 2521-9766.

Oat (Avena sativa L.) is a cereal grain, its seeds are rich in nutrients, is consumed as whole grain with health benefits fot humans due to its antioxidants, such as the avenanthtamides (Avns). The contents of Avns 2c, 2f and 2p were evaluated by HPLC in groats and hulls of oat varieties Chihuahua, Cuauhtemoc, Raima and Avemex cultivated in Durango, México. The association of these Avns with protein, fat, crude fiber and ash of oat was also investigated. A 4x2 bifactorial design was used, with the number of varieties and groats ot hulls as factors. Avns contents differed significantly (p<0.05) among oat varieties, groats and hulls. Avemex groats had the highest concentrations of Avns: 3.6±0.7, 3.0±0.5 and 3.3±0.6 mg kg^-1 fot 2c, 2f and 2p Avns. Avemex groats also had the highest protein content and Avns showed positive correlation with protein content indicating that Avns could be found in oat varieties with high protein content. Karma and Avemex had highet protein content with Avemex containing three times more Avns than othet varieties.

Keywords : antioxidants; groats; hulls; oat; polyphenols.