The important factor which affects the rheological behavior of LAB is the heat treatment of milk and fermented product. Temperature affects the rheological parameters mainly due the denaturation of proteins present (Casein) in milk. This protein casein present in colloidal form and it is sustained by calcium bridges between the casein micelles. Apart of the casein, another protein substance is also present in milk is whey protein and is exist in soluble state and have no interaction with casein micelles (Mathur et al., 1978; Jenness and Patton 1959). When milk is heated the whey protein gets denatured and interacts with casein micelles without affecting the calcium bridges. During fermentation process, starter bacteria produces lactic acid so that pH of the medium decreases. Due to which calcium of bridges goes from colloidal state to solution state. As the acidity rises and pH decreases, these calcium bridges between the protein particles get dissolved in solution state (Hassan, 2003). Now these