They are principally cultivated between 30 and 37ºC on rich media as MRS (Man Rogosa Sharp), milk or milk derivatives; therefore, many strains of dairy LAB manufacture extracellular polysaccharides (Tabibloghmany and Ehsandoost, 2014). They can grow extremely rapid in milk at temperatures 37 to 45°C. A special characteristic of the metabolism of these bacteria is that they utilizes only the glucose moiety from sugars like lactose and sucrose, resulting in fermented product lactic acid containing residual galactose or fructose. These residual moieties further metabolize in the formation of other beneficial metabolic compounds. The specific flavor compound produced by these bacteria during milk fermentation is acetaldehyde, diacetyl and anti bacterial compound bacteriocins. Apart from this, these bacteria are well known for their ability to produce EPS resulting in a desired slimy & rheological structure of the fermented product.