to which colour the food changes on adding the solution to it
Answers
Answer: When iodine solution is added to a food item, it turns into blue-black colour if starch is present. If starch is not present, then the colour will stay orange or yellow.Bread and potato contain starch which gives blue-black in colour on addition of iodine solution.When will drop iodine solution on potato the area which comes under contact of iodine solution will turn blue-black due to presence of starch. ... If starch amylose is not present, then the color will stay orange or yellow.The iodine is having a chemical reaction with the starch in the potato. When the iodine finds the long, straight chains of sugars in the starch, they attach to each other and get twisted. The result looks more like a spiral than a straight chain, and it results in the purple or blue color you're seeing.
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