Action of salivary amylase stops when it mixe | vedclass

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Question

(B) Salivary amylase is an enzyme that functions optimally at a neutral $pH$ (approximately $6.8$) in the mouth.When food enters the stomach,it mixes

Vedclass · Accepted Answer

amylase becomes inactive in pH $1.8$

Vedclass · Answer

(B) Salivary amylase is an enzyme that functions optimally at a neutral $pH$ (approximately $6.8$) in the mouth.When food enters the stomach,it mixes with gastric juice,which contains hydrochloric acid $(HCl)$.This makes the environment highly acidic (a $pH$ of approximately $1.8$ to $2.0$).Salivary amylase is sensitive to $pH$ changes and becomes denatured or inactive in this highly acidic environment,thereby stopping the digestion of starch.

Action of salivary amylase stops when it mixes with gastric juice in stomach because . . . . . . .

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