Abstract

RAMIREZ, M; O, Alejandra  and  ORTIZ DE BERTORELLI, Ligia. Estudio de algunas características de las proteínas de Canavalia. ALAN [online]. 2000, vol.50, n.1, pp.69-73. ISSN 0004-0622.

SUMMARY. Characterization of protejn from Canavalja. The purpose of this work was the isolation and characterization of grain protein from five Venezuelans Genotypcs (U-02. Yaracuy. Valle De La Pascua, Originaly Tovar) of Jack Bean (Canavalia ensifonnis). The average protein content from these genotypes was 31.37%, it ranged between 28.44% and 33.05%. The protein isolation was performed by solubility extraction procedures, showed: 84.57% of albumins, globulins and non proteic nitrogen and 15.43% of alcohol insoluble reduced glutelin (AIG). The content of antinutritional factors (canavanine and hemagglutination title) found in protein fractions were respectively: Albumins 1.96 %. + 4; globulins 0.17%. + 5 and AIG 0,22%, + l. It was observed that protein fractions of genotype Tovar had the lowest canavanine values (0.79%,0,02% and 0,00% respectively). The globulins gave the highest in vitro protein digestibility (65.20%) followed by Albumins (58.90%) and AIG (37.28%)

Keywords : Jack Bean; protein isolation; protein digestibility; antinutritional factors.