Essential Fatty Acids

Essential Fatty Acids


ESSENTIAL FATTY ACIDS (EFA)

  • Polyunsaturated fatty acids (PUFA) are 3 fatty acids- linoleic acid, linolenic acid and arachidonic acid are called essential fatty acids.
  • Fatty acids requires but not synthesized fatty acids in humans.
  • Human cannot synthesize linoleic acid and linolenic acid.
  • Linoleic acid is the most important essential fatty acids.
  • Linoleic acid in decreasing order-
  • Safflower oil > cornoil > sunflower oilSoyabean oil
  • Arachidonic acid has maximum carbon atoms (20).
  • Linolenic acid- (3 double bonds)- C17 H29COOH

 Functions of Essential Fatty Acids-

  • Arachidonic acid a 20 carbon polyunsaturated fatty acid.
  • Arachidonic acid is an essential precursor of eicosanoids (prostaglandins)
  • EFAs are required to maintain structural integrity by maintaining cell membrane structure.
  • Docosa hexaenoic acid (DHA: ω-3) derived linolenic acids. (brain and retina during neonatal period)
  • Docosa hexaenoic acid (DHA: ω-3)- supplied by breast milk.
Exam Question
 
  • Polyunsaturated fatty acids (PUFA) are 3 fatty acids- linoleic acid, linolenic acid and arachidonic acid are called essential fatty acids.
  • Fatty acids requires but not synthesized fatty acids in humans.
  • Human cannot synthesize linoleic acid and linolenic acid.
  • Linoleic acid is the most important essential fatty acids.
  • Linoleic acid in decreasing order-
  • Safflower oil > cornoil > sunflower oil> Soyabean oil
  • Arachidonic acid has maximum carbon atoms (20).
  • Linolenic acid- (3 double bonds)- C17 H29COOH

Functions of Essential Fatty Acids-

  • Arachidonic acid a 20 carbon polyunsaturated fatty acid.
  • Arachidonic acid is an essential precursor of eicosanoids (prostaglandins)
  • EFAs are required to maintain structural integrity by maintaining cell membrane structure.
  • Docosa hexaenoic acid (DHA: ω-3)- derived linolenic acids. (brain and retina during neonatal period)
  • Docosa hexaenoic acid (DHA: ω-3)- supplied by breast milk.
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