The role of LAB in dairy product manufacturing can be shortly summarized as milk fermentation, milk acidification, synthesis of aromatic compounds, development of texture and viscosity. Milk chemically acidified by lactic acid produced by the starter culture from sugars like lactose. It has been studied that lactic acid produced reduces the pH of the milk and leads to the solubilization of micelles of calcium phosphate present in milk (Zourari et al., 1992). This causes the demineralization and destabilization of casein micelles, which generates the complete precipitation of casein in a pH range of 4.6-4.7 (Fox, 1989). Now the interaction between this precipitated casein and produced polysaccharide is important in relation with the milk gel quality and formation. According to Snoeren et al., (1976) electrostatic attraction between charged polysaccharide and casein molecular is the major driving force for these interactions, some of mixed polysaccharide and milk showed that precipitated casein particle are absorbed on the polysaccharide chain. EPS have the potential to replace hydrocolloids currently used as bread improvers and meet so the consumer demands for a reduced use of food additives (Galle and Arendt, 2014)