Question

a slice of bread gives a positive iodine test however if the slice is throughly chewed the test gives negative explain with reason



​

Answer 1

Answer:

It comes positive at first because it contains starch, after chewing it becomes negative because the saliva contains enzymes called salivary amylase which breaks down starch into simple sugars , like maltose and dextrin. When you chew the bread saliva digests the starch present in it hence it gives negative test.

Explanation:

Mark me as brainlist answer