Ptyalin is

Strongly acidic

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Slightly acidic

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Slightly neutral

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Strongly alkaline

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Solution

The correct option is A Slightly acidic
Ptylin is the salivary amylase that converts the starch into the dextrin and maltose. Its optimum pH is 5.6- 6.9 and prevents the minerals to dissolve from dental hard tissues by keeping mouth's pH slightly acidic. Thus, the correct answer is option B.

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