Streptococcus thermophilus
Quick Summary
Streptococcus thermophilus is a species of lactic-acid bacteria. Lactic-acid bacteria are a group of gram-positive bacteria that produce lactic acid as a byproduct of carbohydrate fermentation. These bacteria are crucial in the production of various fermented foods, including yogurt, buttermilk, and certain cheeses.123
While some Streptococcus species can cause diseases in humans and animals, such as strep throat or pneumonia, S. thermophilus is primarily known for its beneficial role in food production. It is commonly used in the dairy industry, particularly in the making of yogurt, where it contributes to the characteristic texture and tangy flavor.31
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