Explain the test of carbohydrate?
Answers
Answer:
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In the test tube with 2 ml of Benedict's reagent, add 5-6 drops of the test carbohydrate solution and mix well. Place the test tube in a boiling water bath for 5 minutes and observe any change in color or precipitate formation.
Answer:
The following are the test to identify the presence of carbohydrates.
- Molisch’s test
- Fehling’s test
- Benedict’s test
- Tollen’s test
- Iodine test
since these tests has so long procedure , I will explain one of the test among these ; the commonly done test , the Benedict test .
Explanation:
This test is given by reducing sugars. in alkaline medium, sodium carbonate converts glucose to enediol and this enediol reduce cupric to cuprous forming cuprous hydroxide.( enediol is catechol or ortho - hydroxy phenol) This solution is kept in sodium citrate and on boiling red precipitate of cuprous oxide is formed.
The chemical reaction is the pic that is provided below:
The presence of red precipitate confirms the presence of carbohydrate
