?Content of Phenolic Compounds and Antioxidant Activity in Seeds of Cucurbita Spp?

CRAVZOV, A. L.; VALENZUELA, G. ; GIMENEZ,M.; MARCHEVSKY. E.

Mendoza

Congreso; XXXI Reunión Anual Sociedad Biologia de Cuyo,; 2013

SOCIEDAD DE BIOLOGIA DE CUYO

?Content of Phenolic Compounds and Antioxidant Activity in Seeds of Cucurbita Spp?; Cravzov A., Valenzuela, G., Giménez M., Marchevsky E.; XXXI Reunión Anual Sociedad Biologia de Cuyo, Noviembre 2013, Mendoza. Oxidative stressand the presence offree radicals arean important cause ofvariouspathologicaltherefore;the objective of this study was to evaluate the phenolic content and antioxidant activity in four varieties of Cucurbita spp seeds: Tetsukabuto (hybrid between C. moschata (Duchesne ex Lam.) (Duchesne ex Poir. And C. maxima Duchesne), C .mixta Pangalo (calabaza rayada), C. moschata (Duchesne ex Lam.) Duchesne ex Poir. (coreanito) and C. maxima Duchesne (calabaza plomo).Total phenols were determined according to the Folin-Ciocalteu method and their content was: Tetsukabuto 212,87±7,51,Calabazarayada275,10±6,86; Coreanito118,79±3,72, Plomo 212,87±7,51 (mol GAE/g sample). The antioxidant activity was calculated on the stable radical 2,2-diphenyl-1-picrylhydrazyl (DPPH) and is expressed as median inhibitory concentration (IC50) showing the following values; Tetsukabuto117,69±5,81;Calabazarayada77,75±3,64,Coreanito110,67±1,70, Plomo87,39±8,64(mg/ml). Fisher test (LSD) revealed that there are two homogeneous groups, formed by C.mixtaPangaloand C. maxima Duchesne which are those with higher phenolic content and antioxidant activity.The results obtained show that these seeds can be considered a source of natural antioxidants.