Explain two ways by which food industries prevent rancidity
Answers
Explanation:
Rancidity is complete (or) incomplete oxidation (or) hydrolysis of fats and oils when exposed to air light moisture loss by bacterial action resulting in an unpleasant taste.
a) 1) It can be presented by adding antioxidants to food containing fat and oil ex hydroxy anisole is added to butter.
2) It can be presented by packing fat and oil containing foods in nitrogen gas.
b) 1) Nolten Nacl is hydroelectrically decomposed to form sodium metal.
2) aluminum metal is obtained by electric decomposition of bauxite (or) mixed with Cryolite
3) Carbonateores are thermally decomposed to give metal oxide which on reduction give metal.
The two ways by which food industries prevent rancidity are described below.
Rancidity is defined as the condition that occurs due to the aerial oxidation of the unsaturated kind of fats and oils present in food. An unpleasant odor or flavor or both could be observed when food becomes rancid.
Two of the ways used by industries to prevent rancidity are as follows.
1. Addition of antioxidants
Antioxidants are substances that help in preventing oxidation. Since, with the addition of antioxidants, there will be no oxidation, thus the food can be prevented from becoming rancid, by this method.
2. Packaging of fat-containing food in nitrogen gas
As nitrogen is an unreactive gas, food containing oil and fat can be prevented from becoming rancid, by packaging it in nitrogen gas. The food remains surrounded by nitrogen gas, so, the oxygen couldn't reach the food, and hence, no oxidation takes place. Thus, no rancidity.
#SPJ2