Chemistry of lipids classification ppt BIOCHEMISTRY
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Chemistry of lipids classification ppt BIOCHEMISTRY

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Chemistry of lipids classification ppt BIOCHEMISTRY Chemistry of lipids classification ppt BIOCHEMISTRY Presentation Transcript

  • Dr. Vijay Marakala, MBBS, MD. Assistant professor BIOCHEMISTRY SIMS & RC
  • Definition Classification Biological importance
  • Organic substances relatively insoluble in water but soluble in organic solvents like chloroform, ether and benzene Definition
  • Simple lipid Complex lipid Derived lipids
  • Neutral fats or oils Alcohol is GLYCEROL Waxes Alcohol is other than glycerol
  • Uncharged
  • Esters of FA with higher molecular weight monohydric alcohols EXAMPLES  Lanolin  Beeswax  Whale sperm oil
  • Subclassified according to the type of prosthetic group Phospholipids Glycolipids Lipoproteins
  • FA + ALCOHOL + PHOSPHORIC ACID They frequently have nitrogen containing bases
  • Phospholipids may be classified on the basis of the type of alcohol present
  • A. Glycerophospholipids B. Spingophospholipids  Phosphatidylcholine  Phosphatidyl ethanolamine  Phosphatidyl serine  Phosphatidyl inositol  Plasmalogens  Cardiolipins  Spingomyelins
  • FA + ALCOHOL[SPINGOSINE] +CARBOHYDRATE WITH NITROGEN BASE Example Cerebrosides Gangliosides
  • Chylomicrons Very low density lipoprotein (VLDL) Low density lipoprotein (LDL) High density lipoprotein (HDL) Lipid with prosthetic group PROTEIN
  • Example Fatty acids Steroids Cholesterol Vitamin A and D
  • Storage form of energy Structural component of cell membrane. Precursor of many steroid hormones, vi tamin D Act as thermal insulator Protection of internal organs
  • Helps in absorption of fat soluble vitamins Lipoproteins transporting lipids Fats serve as surfactants by reducing surface tension. Improve taste and palatability. Acts as electric insulators in neurons.
  • Long Essay (10 marks) Define lipids, classify lipids with suitable examples and mention their functions. Short Essay (5 marks) Phospholipids Glycolipids