Question

how to test the presence of carbohydrate?

Answer 1

Test for carbohydrates

• To prepare a dilute solution of iodine, a few drops of tincture iodine are added to a test tube half-filled with water.

When the dilute solution of iodine is added to food items containing starch e.g., raw potato, the color of the food item changes to blue, indicating the presence of starch.

Let us perform a test to find the presence of starch in a food item.



Take a raw potato and cut it into two halves. Put one half of the potato on a plate and use a dropper to put 2-3 drops of iodine solution on it.

You will observe that the color of the potato slice changes to blue-black.

The presence of this blue-black color indicates that potatoes contain starch.

 

Answer 2

Test of carbohydrates

Aim of the experiment :-To prove the presence of carbohydrate in food

Materials required :- food dropper delete iodine solution

Procedure :- A a small quantity of food to be tested was taken 2-3 drops of dilute iodine solution where I added to the food with the help of dropper

Observation:- Formation of blue black colour

Inference :- The given food sample contains starch reacts with iodine forming blue black colour