cheese. The contrast in proteolytic activities may be due to the strains associated with the products. Peterson et al. reported that important differences exist between species of LAB in terms of the types and quantities of peptidase activities. The proteolytic activity of dairy lactic acid bacteria is essential for the bacterial growth in milk and is involved in
the development of organoleptic properties of different fermented milk products.The production of high quality
fermented dairy products depends on proteolytic systems of starter bacteria, since peptidase and amino acids formed have
a direct impact on flavor or serve as flavor precursors in these products.