Question

Differentiate between curdling and fermentation

Answer 1

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» Curdled milk :

• It could be natural souring with unknown and mixed bacteria, and it may be very bad smelling curdled milk.

• There are different type of natural fermentation, such as ropy fermentation, which makes milk like a rope, like appearance, and there are some others also.

» Yogurt :

• It is planned fermentation, milk is first heat treated ( such as boiling or at least pasteurization).

• First kill the existing flora, and then milk is inoculated with proper bacteria, for yogurt to produce yogurt.

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Answer 2

Answer:

» Curdled milk :

• It could be natural souring with unknown and mixed bacteria, and it may be very bad smelling curdled milk.

• There are different type of natural fermentation, such as ropy fermentation, which makes milk like a rope, like appearance, and there are some others also.

» Yogurt :

• It is planned fermentation, milk is first heat treated ( such as boiling or at least pasteurization).

• First kill the existing flora, and then milk is inoculated with proper bacteria, for yogurt to produce yogurt.