Each polysaccharide tested gives different colour results with the iodine test. Explain the reason?
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Each polysaccharide tested gives different colour results with the iodine test. Explain the reason?
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Explanation: Iodine (iodine-potassium iodide, I2KI) staining distinguishes starch (a polysaccharide) from monosaccharides, disaccharides, and other polysaccharides. ... Therefore, a bluish black color is a positive test for starch, and a yellow-ish brown color (i.e., no color change) is a negative test for starch.
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