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Question

____% of starch is hydrolysed by salivary amylase


A

60%

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B

30%

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C

All starch is hydrolysed

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D

0%

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Solution

The correct option is B

30%


Saliva contains enzymes like salivary amylase and lysozyme. The salivary amylase having a pH of 6.8 has hydrolytic action on carbohydrates. 30% of starch is hydrolysed in the mouth by the enzyme salivary amylase. Starch is hydrolysed into a disaccharide – maltose.


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