Yogurt Nutrition and Healthy Bacterias
1. What those bacteria do
Lactobacillus bulgaricus and Streptococcus thermophilus, the two bacteria required by FDA standards for yogurt, are added to a warm milk bath, where they proceed to ferment and coagulate into a semisolid, producing tangy lactic acid along the way. Manufacturers can add other probiotics, like Lactobacillus acidophilus and Bifidobacterium, but they're not required or regulated.