Dahi is highly palatable and easily digestible by human digestive system which contains macronutrients like protein, carbohydrates, fat and minerals like calcium and phosphorus. This study aims to screen the antibacterial activity of dahi which is good source of lactic acid bacteria (LAB). Lactic acid bacteria produce certain antimicrobial substance, which plays important role for the antibacterial activity for most of the milk products. | Antibacterial activity of ‘Dahi’ prepared from dairy industry, cottage and house hold against food borne pathogens