Question

Rancidity of oils and fats is caused by

• A. hydrolysis of triglycerides
• B. oxidation of the unsaturated glycerides
• C. both hydrolysis of triglycerides & oxidation of the unsaturated glycerides
• D. none of these

Answer 1

The correct option is C both hydrolysis of triglycerides & oxidation of the unsaturated glycerides

Solution:

Hydrolysis will split fatty acid chains away from the glycerol backbone in glycerides. These free fatty acids can then undergo further auto-oxidation. Oxidation primarily occurs with unsaturated fats by a free radical-mediated process. These chemical processes can generate highly reactive molecules in rancid foods and oils, which are responsible for producing unpleasant and unpleasant odors and flavors.