Question

Each polysaccharides tested gives different colour results with the iodine test explain the reason briefly

Answer 1

Iodine (iodine-potassium iodide, I2KI) staining distinguishes starch (a polysaccharide) from monosaccharides, disaccharides, and other polysaccharides. The basis for this test is that starch is a coiled polymer of glucose. Iodine interacts with these coiled molecules and becomes bluish black.

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