Question

explain the test for protein for food item 'TUAR DAL'



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Answer 1

Answer:

Test for Protein

Take a small quantity of a food item for testing. If the food you want to test is a solid, you first need to food items make a paste of it or powder it. Grind or mash a small quantity of the food item. Put some of this in a clean test tube, add 10 drops of water to it and shake the test tube.

Now, using a dropper, add two drops of solution of copper sulphate and ten drops of solution of caustic soda to the test tube. Shake well and let the test tube stand for a few minutes. What do you see? Did the contents of the test tube turn violet? A violet colour indicates presence of proteins in the food item.

Answer 2

Answer:

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