Question

In case of taking food rich in lime juice, the action of ptyalin on starch is _____.

• A. Enhanced
• B. Reduced
• C. Unaffected
• D. Stopped

Answer 1

Answer: (B)

Reduced

B. Reduced.

Solution: Lime juice contains a mild organic acid, so consuming food with lime the juice will cause a lowering of pH in the mouth. If enough acidic food is consumed together with food containing starch, probably the effect would be slower digestion of starch since ptyalin is not much helping anymore.

So, the correct answer is option B.