Question

Why does a milkman add a small amount of baking soda to fresh milk to shift the pH of fresh milk from 6 to slightly alkaline?

Answer 1

Bonjour!!

He shifts the pH of the fresh milk from 6 to alkaline so that in basic form it will not spoil easily. This milk takes a long time to set as curd because the lactic acid produced reacts with the baking soda.

Answer 2

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During summer, milkman generally adds a little amount of baking soda to fresh milk. Why? Baking soda is a base. It is added to fresh milk to prevent the curdling of milk because it neutralise the lactic acid produced in the milk by the action of bacteria.

He shifts the pH of the fresh milk from 6 to alkaline so that in basic form it will not spoil easily. This milktakes a long time to set as curd because the lactic acid produced reacts with thebaking soda.


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