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۱The Proteolytic Activity Research of the Lactic Acid Microorganisms of Different Taxonomic Groups
اطلاعات انتشار: World Applied Sciences Journal، بيست و سوم،شماره۱۰، ۲۰۱۳، سال
تعداد صفحات: ۷
The properties of the proteolytic lactic microorganisms of different taxonomic groups (Lactococcus, Lactobacillus and Leuconostoc) is studied in the presence of rennet in the cultural environment. It is shown that when cultured on skim milk the studied strains Lactococcus lactis are capable of decomposing the soluble proteins in the environment.The rennet presence in the culture environment leads to the proteolytic activity increase of the strains. We note the strains proteinase activity of the Lactococcus lactis subsp. cremoris strains in relation to casein. The proteinase and peptidase activity Lactococcus lactis subsp. cremoris increase under the influence of the rennet. We found the similarities proteolitical culture activity of Lactobacillus and Lactococcus lactis subsp. cremoris. It is concluded that Leuconostoc strain has a low–peptidase activity. We characterized the proteinase–peptidase system of lactic acid microorganisms and propose the mechanism of casein molecule decomposition by lactic acid microorganisms in the presence of rennet.
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