BIOMOLECULES AND ENZYMES

BIOLOGY

CARBOHYDRATES

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What reagent is used to test for starch?
A
iodine
B
Benedicts
C
Sudans
D
Lugol’s
Explanation: 

Detailed explanation-1: -Starch Test: Add Iodine-KI reagent to a solution or directly on a potato or other materials such as bread, crackers, or flour. A blue-black color results if starch is present.

Detailed explanation-2: -Explain which reagent is used in the Iodine test: Lugol’s reagent is used in the Iodine test. This reagent is a common disinfectant and comprises elemental iodine and potassium iodide (KI).

Detailed explanation-3: -A chemical test for starch is to add iodine solution (yellow/brown) and look for a colour change. In the presence of starch, iodine turns a blue/black colour.

Detailed explanation-4: -Why do we perform Test for Starch? The iodine test for starch is mainly performed to test the presence of carbohydrates. The food products which we eat include different types of carbohydrates, among which starch and sugars are the main carbohydrates found in our food products.

There is 1 question to complete.