Proteolytic activity of Lactobacillus strains on soybean proteins

AGUIRRE L.; HEBERT EM; GARRO M.S; SAVOY DE GIORI G

LEBENSMITTEL-WISSENSCHAFT UND-TECHNOLOGIE-FOOD SCIENCE AND TECHNOLOGY

ELSEVIER SCIENCE BV

Lugar: Amsterdam; Año: 2014 vol. 59 p. 780 - 785

0023-6438

The capacity of Lactobacillus strains for degrading soy proteins was evaluated. The hydrolytic action was monitored by SDS-PAGE and reverse phase-HPLC analyses. Peptidase activities were also determined using synthetic chromogenic substrates. All assayed strains were able to hydrolyze alpha´-subunit of Beta conglycinin while for the other fractions the degree of degradation was strain-dependent. The pattern of peptides produced from soy proteins hydrolysis differed amongst the lactobacilli studied, suggesting different proteolytic enzyme specificities