question about milk

Silvia

2007-07-29 7:07 am

Milk can be coagulated in acidic medium.is it beacause in the milk,there is a kind of protease that can coagulated the milk protein when the milk is in acidic medium, just like the proteases in our stomach?

回答 (1)

Sing-Tat

2007-07-29 8:36 am

✔ 最佳答案

Of course NOT!!!

Milk coagulates in the presence of acids since it has a kind of proteins called casein.
Casein usually appears in milk in the form of calcium salt.
However, in the presence of acids, this kind of proteins will be precipitated as "solid masses". Coagulation takes place.

In our stamach, we have a kind of enzyme called rennet.
They are proteases to coagulate milk protein.
In addition, the acidic medium in stomach also helps to coagulate milk proteins (stated above).

參考: wikipedia & myself

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