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Streptococcus lactis
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Streptococcus lactis

bacterium
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Quick Summary

Streptococcus lactis is a type of lactic-acid bacterium. These bacteria are gram-positive and produce lactic acid as a primary result of carbohydrate fermentation. They are crucial for the production of various fermented foods, including certain cheeses, yogurt, and cultured buttermilk.123

While some Streptococcus species can cause diseases in humans and animals, S. lactis and S. cremoris are specifically used in commercial starters for dairy products. These bacteria help preserve milk by suppressing spoilage and pathogenic organisms, and they contribute to the unique flavors of cultured dairy items.23

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3 Britannica Sources
  1. lactic-acid bacterium
  2. streptococcus
  3. dairy product - Buttermilk

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