Biochemical evaluation of protein fractions from physic nut (Jatropha curcas L.)
2012
L. Peralta-Flores | S. Gallegos-Tintoré | J. Solorza-Feria | G. Dávila-Ortíz | L. Chel-Guerrero | A. Martínez-Ayala
J. curcas seed proteins were fractioned according to the Osborne method and some biochemical properties were determined for these fractions. Glutelins (378 g kg–1 protein) and globulins (201 g kg–1 protein) were the main components. Albumins and prolamins were the minor components. Protein digestibility was highest in glutelins and globulins with values of 81 and 80% respectively. Electrophoresis analysis showed that globulins and glutelins exhibited similar polypeptide profiles. Electrophoresis patterns suggested that there could be a structural relationship among 2S, 7S and 11S storage proteins from plant sources. According to the FAO⁄WHO reference, the protein fractions had acceptable levels of most of the essential amino acids, but its globulins and glutelins were low in lysine and tryptophan.
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