LIPID( FAT)
The name lipid derived from greak
word LIPOS means fat …
Lipids are the hetrogeneses group of copound which are the
ester of fatty acids .
Lipids represent most important storage form of energy
insoluble in water and soluble in organic solvents such as chloroform benzen etc……….
BIOLOGICAL ROLE OF LIPIDA ( FAT )
The most important role of lipids is as fuel….
Lipids functions as the medium and soures of fat soluble
vitamins (ADEK) means vit. A, vit .D,vit.E,vit .K……
Fat may also provides
padding to protect internal organs ..
Lipids (phaspholipid ) act as ideal barrier in between extra and intra cellular fluid ….
Lipids functions as the insulators of internal organs of the
body ..
Lipids are the consitituent of membrane structure and
regulate the membrane permeability…
CLASSIFICATION OF LIPIDS ( FAT)
FAT/ OLIS = these are ester of fatty acids
with geresrol…..
The defference between fat and oil only physical .
Thus oil is liquid while fat is a solid at roomtemp..
WAXES =- these are ester of fatty acid with
alcohol other than gleresrol ..
These alcohol may be aliphatic and alicyclic EXAMPLE – cetyl alcohol …..
2 COMPLEXCOPOUND ………..
These mainly three types as following ………
A= phospholipid…..
B= glycolipids ………..
C= lipoprotein ………
D= other complex lipids ….
A= phospholipdis = they contain
phosphoric acid and frequentional a
nitrogenes base….
EXAMPLE =
glyesophospholipid , sphingophospholipid
B= GLYCOLIPIDS= these lipids contain a fatty acid , carbohydrates and notrogenes base
C= LIPOPROTEINS = macro molecular complexes of lipids with proteins ..
D= OTHER COMPLEX LIPID =- sulpho lipids , amenolipids and lipopolysaccharides membrane
of this class….
3= DERIVED LIPIDS = these are lipids derived from simple and compound lipid by
hydrolysis …
4= MISCELLANEOUS LIPID = large number of compound represent
charterstics of lipids
EXAMPLE = cartenoids .
squalene . terpenes . etc
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