The Dairy Bacteria
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Species Major known function Product
Propionibacterium shermanii Flavor & eye formation Swiss cheese family
Acid and flavor Bulgarian buttermilk, yoghurt, kefir, koumiss, Swiss, Emmental, and Italian cheeses
Lactobacillus acidophilus Acid acidophilus buttermilk
Streptococcus thermophilus Acid Emmental, Cheddar, and Italian cheeses, and yogurt
Streptococcus diacetilactis Acid Sour cream, ripe cream, butter, cheese, buttermilk and starter cultures.
Acid Cultured buttermilk, sour cream, cottage cheese, all types of foreign and domestic cheeses, and starter cultures.
Acid and flavor Soft Italian, cheddar,
and some Swiss cheeses.
Flavor Cultured buttermilk, sourcream, cottage cheese, ripened cream butter, and starter cultures.