15. Explain the procedure, materials
required for the observation of
Bacteria present in curd. Write the
precautions.
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Answer:
Yogurt has been made and consumed for thousands of years, and is today recommended for effective regulation of the digestive system. Although milk from a number of animals (sheep, goat and water buffalo) can be used, it’s more popularly produced by using milk from cows. This process also involves the use of bacteria, which thickens the milk, giving it a tangy taste.
Yogurt is produced through a simple process referred to as fermentation. Here, the lactose in milk is fermented by rod-shaped bacteria to produce lactic acid. It is this acid that gives yogurt its characteristics.
Explanation:
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