1. Place a small amount of starch powder in a test tube filled with cold water
2. Boil it to make a clear solution
3. Once the solution has cooled off, you should put 3 or 4 drops of iodine solution in it.
4. The solution should turn dark blue.
theory of starch test kit?
Starch doesn't react in the Benedict test.
You can test for starch in food by dropping iodine on food on an agar plate, if it turns black, it contains starch.
Starch has high affinity for Iodine and in presence of iodine crystals starch turns blue from being colourless. This the fundamental that is used for chemically identifying the starch.
I think you mean starch and to test for it you have to use iodine and this turns black if there is starch in your food if nothing happens then there is no starch in the food.
The test is positive with starch because the iodine takes up a position in the centre of the starch helix which is blue black.
If the food has starch or not
It is used to test for starch.
The iodine test is applicable.
The test of starch by covering the black paper and keeping it into a light place at few hours.
The iodine test is used to test for starch. It reacts with starch to produce a purple blackish color.
They test for carbohydrates. The Iodine reagent tests for starch. The Benedict's reagent tests for small sugars. Most carbohydrates are are made of sugar, and starch is a type of carbohydrate.