Among food products probiotic bacteria is
distributed in a variety of products including fermented milks, ice cream, various
types of cheese, baby-food milk powder, frozen dairy desserts, whey-based beverages,
sour cream, butter milk, normal and flavored milk, and concentrated milk. Currently,
yogurt is the major probiotic which is sold to consumers. Mortavasian et al. attempted
to characterize the probiotic microorganisms used in food products exploring the most
common, bifidobacteria and lactic acid bacteria.