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Pratik was performing an experiment to test for the presence of starch and
glycogen in different types of foods. He treated four food samples with a Lugol's
iodine reagent. This solution is brown-yellow, but it produces a blue-black color
when it reacts with starch and a brown-blue color when it reacts with glycogen.
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Pratik was performing an experiment to test for the presence of starch and
glycogen in different t...
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