Strains of Debaryomyces hansenii originally isolated from sausages were scr
eened for proteinase and aminopeptidase activity towards synthetic substrat
es. On the basis of these results, D. hansenii CT12487 was selected for fur
ther assays. The activities of the whole cells (WC), cell-free extracts (CF
E) and a combination of both from the selected strain on pork muscle sarcop
lasmic protein extracts were determined by protein, peptide and free amino
acid analyses. There was a pronounced hydrolysis of protein bands of 110 kD
a and 27-64 kDa regardless the incorporation of WC, CFE or a combination of
both. The proteolytic activity also resulted in the generation of polar an
d non-polar peptides showing noticeable differences depending on the additi
on of WC or CFE. Whole cells generated greater amounts of free amino acids
than the cell-free extracts. (C) 2001 Elsevier Science B.V. All rights rese
rved.