Question

where do you think the bacteria for these fermentation come from ?​

Answer 1

Answer:

Bacteria for fermentation is present in the environment, as the bacteria finds the suitable medium starts fermentation. In case of curd, lactobacillus bacteria ferments milk to curd. So, for fermentation of milk we have to provide the inoculum of lactobacillus bacteria for fermentation to be carried out.

Answer 2

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