Question

Which of the following pairs is not proper?
A.Food Preservative-Sodium meta-sulphate
B.Anti-oxidant- Sorbic acid
C.Food colour- Arneto
D.Artificial sweetening agent-Alitame

Answer 1

Hint: Chemicals are added to food for their preservation and enhance their appeal to them like food colors, anti-oxidants, food preservatives, artificial sweetening agents, flavoring agents and fat emulsifiers. They do not have nutritive values.

Complete step by step answer:
-Food preservatives are chemicals used to stop the bacterial and fungal growth and save them from spoiling the food. Sodium meta-sulphate is a food preservative. Its chemical formula is- $\left( {N{a_2}{S_2}{O_5}} \right)$. Its uses-
-It is used in jams, squashes and pickles as a food preservative.
-It is also used as a disinfectant.
-It is also used as an antioxidant.
-Antioxidants-are the chemical substances which reduce the rate of reaction with oxygen in food. Sorbic acid is not an antioxidant. Sorbic acid is a food preservative. Its chemical formula is $C{H_3}{\left( {CH} \right)_4}C{O_2}H$. It is used in-In preservation of milk cheese.
In preparation of certain meats and fish products as it stops the growth of yeast.
-Food colour-It imparts colour to the food. Arneto is used as a food colour. It is added to the food to make it more attractive, appealing and appetizing.
-Artificial sweetening agents are used to sweeten the food without adding the calories to our body. They have no food value. Alitame is an artificial sweetening agent. Alitame is used as artificial sweetening agent because-
It is stable at high temperatures so it can be used in cooking and baking.
It is $2000$ times sweeter than sugar.
Hence option B is not proper.

The correct answer is B.

Note:
The compounds used as food preservative must have following properties-
-It should not react with food material.
-It should not decrease the quality of food.
-It should not have any harmful effect on the body.
-Its effect should be for a longer period.