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In Bulgaria, Croatia, and Romania the products include semi-solid yogurts (plain, cereal, strawberry, peach and prune) and yogurt drinks (plain, cereal, strawberry-kiwi and cherry-vanilla). [citation needed] In Finland the Activia brand includes fruit and natural yogurt as well as yogurt drinks. Lactose free forms of the yogurt are also sold.
Due to more than a century of safe use, the FDA has granted L. bulgaricus a "grandfather" status, with an automatic GRAS status (generally recognized as safe). [17] Moreover, the Code of Federal Regulations mandates that in the US, for a product to be called yogurt, it must contain two specific strains of lactic acid bacteria: Lactobacillus bulgaricus and Streptococcus thermophilus, as ...
Both species produce lactic acid, [8] which gives yogurt its tart flavor and acts as a preservative. The resulting decrease in pH also partially coagulates the milk proteins, such as casein, resulting in yogurt's thickness. [9] [10] While fermenting milk, L. d. bulgaricus produces acetaldehyde, one of the main yogurt aroma components. [10]
A fermented milk product. In common with all dairy yogurt, Bulgarian yogurt is produced through the bacterial fermentation of milk, using a live culture of Lactobacillus bulgaricus and Streptococcus thermophilus. Butter [6] Made by churning fresh or fermented cream or milk.
The species is commonly found in humans, specifically the gastrointestinal tract and oral cavity as well as some speciality fermented foods such as fermented milk or yogurt, though it is not the most common species for this. The species most readily grows at low pH levels (below 5.0), and has an optimum growth temperature of 37 °C.
Leuconostoc lactis is a Gram-positive, non-motile, lactic acid bacterium that thrive best in acidic conditions and moderate temperatures. [2] [1] L. lactis is capable of acidifying culture media through lactose fermentation to pH levels of 4.0-4.1, and milk to levels below 5.4. [4]