Production of natural food additives for using in dairy products

The present study deals with production of bioemulsifier and exopolysaccharides from some of lactic acid bacteria that could potentially be used in food and dairy industries and many other applications. The workplan included six main parts: 1- Selecting bioemulsifier-producing bacteria from Streptococcus thermophilus strains. 2- Using of extracellular bioemulsifier from Streptococcus thermophilus strains for using in production of frozen yogurt as a probiotic carrier food. 3- Production of microbial exopolysaccharides from Lactbacilus kefiranofaciens and yeast strain. 4- Use of exopolysaccharides in the manufacture of probiotic frozen yoghurt. 5- Preparation of Low Sodium Processed cheese Spread. 6- Studies on probiotic critera of some Bifidobacterium and Lactobacilli strains for producing synbiotic yoghurt as a functional food.