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Question
Yoghurt is produced with the help of ______.
Yoghurt is produced with the help of ______.
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Solution
The correct option is A Lactic acid bacteria
Yoghurt is produced through the fermentation of milk by lactic acid bacteria, usually Lactobacillus bulgarius and Streptococcus thermophilus. The milk is first heat treated, homogenised and is then cooled to allow the addition of bacteria or starter culture. This yogurt-milk mixture is then left overnight to ferment. The conversion of lactose in milk to lactic acid by the action of these bacteria drops the pH of the solution, causing the milk solids to become trapped in a gel matrix. This gel matrix of milk solids and proteins is called yoghurt.
Lactic acid bacteria
Yoghurt is produced through the fermentation of milk by lactic acid bacteria, usually Lactobacillus bulgarius and Streptococcus thermophilus. The milk is first heat treated, homogenised and is then cooled to allow the addition of bacteria or starter culture. This yogurt-milk mixture is then left overnight to ferment. The conversion of lactose in milk to lactic acid by the action of these bacteria drops the pH of the solution, causing the milk solids to become trapped in a gel matrix. This gel matrix of milk solids and proteins is called yoghurt.
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