NUTRITION
CARBOHYDRATES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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What indicator do we use to test for the presence of starch?
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Biuret’s
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Sudan III
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Lugol’s/Iodine
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Benedict’s
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Explanation:
Detailed explanation-1: -Starch Test: Add Iodine-KI reagent to a solution or directly on a potato or other materials such as bread, crackers, or flour. A blue-black color results if starch is present.
Detailed explanation-2: -This solution is used as an indicator test for the presence of starches in organic compounds, with which it reacts by turning a dark-blue/black. Elemental iodine solutions like Lugol’s will stain starches due to iodine’s interaction with the coil structure of the polysaccharide.
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