Isomerism In Fatty Acids

Isomerism In Fatty Acids


ISOMERISM IN FATTY ACIDS

  • Cis- trans isomerism is a type of geometric isomerism.
  • Cis- trans isomerism occurs in unsaturated fatty acids.
  • Double bonds in naturally occuring vegetable unsaturated long-chain fatty acids are nearly all in the cis configuration.
  • Trans fattyacids are formed during the hydrogenation.
  • Trans fatty acids are in deep fried foods.
  • Trans fatty acid is increased in vegetable oil refining, hydrogenation and food frying.
  • High dietry trans fatty acid increases LDL cholesterol and decreases HDL. 

Effects of Fatty acids on Lipid Profile and Cardiovascular disease-

  1. Saturated fatty acid-
  • Carbon chain length of 14- myristic (increases cholesterol)
  • Carbon chain length of 16- palmitic
  • Carbon chain length of 18- Stearic acid

2. Monounsaturated fatty acid (oleic acids)- decrease CHD.

  • Least source of PUFA ls Coconut oil
  • Richest source of medium chain fatty acid is Coconut oil
  • Fatty acid present in human milk is Docosa Hexaenoic Acid (Cervonic Acid).
Exam Question
 
  • Cis- trans isomerism occurs in unsaturated fatty acids.
  • Double bonds in naturally occuring vegetable unsaturated long-chain fatty acids are nearly all in the cis configuration.
  • Trans fattyacids are formed during the hydrogenation.
  • Trans fatty acids are in deep fried foods.
  • Trans fatty acid is increased in vegetable oil refining, hydrogenation and food frying.
  • Saturated fatty acid-
  • Carbon chain length of 14- myristic (increases cholesterol)
  • Carbon chain length of 16- palmitic
  • Carbon chain length of 18- Stearic acid
  • Fatty acid present in human milk is Docosa Hexaenoic Acid (Cervonic Acid).
  • Least source of PUFA ls Coconut oil
  • Richest source of medium chain fatty acid is Coconut oil
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