Tag: food chemistry

Questions Related to food chemistry

Some scientists believe that a chemical widely used as a preservative and a colouring agent in foods gets converted to an acid in the stomach, affects the genes and causes cancer in human beings. Identify that substance.

evs - i methods of preserving food food spoilage and food preservation chemicals in food food chemistry

  1. Ferric chloride

  2. Sodium nitrite

  3. Vinegar

  4. Sulphur dioxide

Show answer
Correct Option: B
Explanation:

Sodium nitrite and nitrate closely are related chemicals that have been used for centuries to preserve meat. While nitrate itself is harmless, it easily converts to nitrite, which when combined with secondary-amine compounds forms nitrosamines, a powerful cancer-exacerbating chemical. This chemical reaction occurs easily during the frying process.


Which of the following is used as a food preservative?

evs - i methods of preserving food food spoilage and food preservation chemicals in food food chemistry

  1. Citric acid

  2. Sucralose

  3. Salts of sorbic acid

  4. Ascorbic acid

Show answer
Correct Option: A,C,D
Explanation:
Citric acid is used both as a natural flavor enhancer and preservative in a variety of foods, such as jams and jellies, canned fruits and vegetables. It's also used in ice cream, fruit drinks, candy, and carbonated beverages.
Sucralose is an artificial sweetener and sugar substitute.
Sorbic acid and its salts, such as sodium sorbate, potassium sorbate, and calcium sorbate, are antimicrobial agents often used as preservatives in food and drinks to prevent the growth of mold, yeast, and fungi. In general the salts are preferred over the acid form because they are more soluble in water, but the active form is the acid.
Ascorbic acid is a popular natural ingredient preservative. It can be used as a preservative in a vast array of food products, including bread, cured meats, jams and jellies, and other sauces and spreads.
therefore option A, C and D are correct