Distribution of Cell Envelope Proteinases Genes among Polish Strains of Lactobacillus helveticus.

ABSTRACT: Most of the lactic acid bacteria (LAB) are able to grow in milk mainly due to the activity of a complex and well-developed proteolytic system. Cell envelope-associated proteinases (CEPs) begin casein hydrolysis and allow for releasing the peptides, enclosed in the structure of native milk proteins that are essential for growth of Lactobacillus helveticus. The biodiversity of genes encoding CEPs among L. helveticus strains can have an effect on some technological parameters such as acid production, bacterial growth rate in milk as well as liberation of biologically active peptides. The study reveals significant differences in the presence of various variants of CEPs encoding genes among ten novel Polish strains and indicates the intraspecific diversity exhibited by L. helveticus. In terms o

SUBMITTER: Skrzypczak KW 

PROVIDER: S-EPMC7256718 | biostudies-literature | 2018 Jun

REPOSITORIES: biostudies-literature