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Page 1: Fatty Acids Fatty acids have a long hydrocarbon chain with a carboxyl (acid) group Typical for of fatty acids : CH 3 –(CH 2 ) n –COOH 12
Page 2: Fatty Acids Fatty acids have a long hydrocarbon chain with a carboxyl (acid) group Typical for of fatty acids : CH 3 –(CH 2 ) n –COOH 12

Fatty Acids

Fatty acids have a long hydrocarbon chain with a carboxyl (acid) group

Typical for of fatty acids : CH3 –(CH2)n –COOH

12<n<20

Page 3: Fatty Acids Fatty acids have a long hydrocarbon chain with a carboxyl (acid) group Typical for of fatty acids : CH 3 –(CH 2 ) n –COOH 12

Saturated- Unsaturated Fatty Acids

Page 4: Fatty Acids Fatty acids have a long hydrocarbon chain with a carboxyl (acid) group Typical for of fatty acids : CH 3 –(CH 2 ) n –COOH 12

Hydrophobic- Hydrophilic Groups

The hydrocarbon tail is extremely hydrophobic and so is insoluble in water. In contrast, the carboxylic acid group is extremely hydrophilic.

Page 5: Fatty Acids Fatty acids have a long hydrocarbon chain with a carboxyl (acid) group Typical for of fatty acids : CH 3 –(CH 2 ) n –COOH 12

Common Fatty Acids

Common name

Chemical structure

Myristoleic acid CH3(CH2)3CH=CH(CH2)7COOH

Palmitoleic acid CH3(CH2)5CH=CH(CH2)7COOH

Oleic acid CH3(CH2)7CH=CH(CH2)7COOH

Linoleic acid CH3(CH2)4CH=CHCH2CH=CH(CH2)7COOH

α-Linolenic acid CH3CH2CH=CHCH2CH=CHCH2CH=CH(CH2)7COOH

Arachidonic acid CH3(CH2)4CH=CHCH2CH=CHCH2CH=CHCH2CH=CH(CH2)3COOH

Eicosapentaenoic acid

CH3CH2CH=CHCH2CH=CHCH2CH=CHCH2CH=CHCH2CH=CH(CH2)3COOH

Erucic acid CH3(CH2)7CH=CH(CH2)11COOH

Docosahexaenoic acid

CH3CH2CH=CHCH2CH=CHCH2CH=CHCH2CH=CHCH2CH=CHCH2CH=CH(CH2)2COOH

Page 6: Fatty Acids Fatty acids have a long hydrocarbon chain with a carboxyl (acid) group Typical for of fatty acids : CH 3 –(CH 2 ) n –COOH 12

Common Fatty Acids

Page 7: Fatty Acids Fatty acids have a long hydrocarbon chain with a carboxyl (acid) group Typical for of fatty acids : CH 3 –(CH 2 ) n –COOH 12

Fats

FAT consists of three-

carbon backbone called

glycerol attached to three

fatty acids, which contain

long hydrocarbon chains .

Page 8: Fatty Acids Fatty acids have a long hydrocarbon chain with a carboxyl (acid) group Typical for of fatty acids : CH 3 –(CH 2 ) n –COOH 12

Ester Bond Formation

Page 9: Fatty Acids Fatty acids have a long hydrocarbon chain with a carboxyl (acid) group Typical for of fatty acids : CH 3 –(CH 2 ) n –COOH 12

Phosphoglycerids

Phospholglycerides are

esters of only two fatty

acids, phosphoric acid

and a trifunctional alcohol

- glycerol (IUPAC name is

1,2,3-propantriol). The

fatty acids are attached to

the glycerol at the 1 and 2

positions on glycerol

through ester bonds.

Page 10: Fatty Acids Fatty acids have a long hydrocarbon chain with a carboxyl (acid) group Typical for of fatty acids : CH 3 –(CH 2 ) n –COOH 12

Phospholipids

Phospholipids have a

structure like a

triglyceride,but contain a

phosphate group in place

of the third fatty acid.

The phosphate group is

polar and therefore

capable of interacting with

water molecules.

Page 11: Fatty Acids Fatty acids have a long hydrocarbon chain with a carboxyl (acid) group Typical for of fatty acids : CH 3 –(CH 2 ) n –COOH 12

STEROIDSSteroids have a backbone of 4 carbon rings.

Cholesterol is the precursor of several other steroids, including several hormones.  

It is also an important component of cell membranes.

Page 12: Fatty Acids Fatty acids have a long hydrocarbon chain with a carboxyl (acid) group Typical for of fatty acids : CH 3 –(CH 2 ) n –COOH 12
Page 13: Fatty Acids Fatty acids have a long hydrocarbon chain with a carboxyl (acid) group Typical for of fatty acids : CH 3 –(CH 2 ) n –COOH 12

REFERENCES

Michael L. Shuler and Fikret Kargı, Bioprocess Engineering: Basic Concepts (2 nd Edition),Prentice Hall, New York, 2002.

1. James E. Bailey and David F. Ollis, Biochemical Engineering Fundementals (2 nd Edition), McGraw-Hill, New York, 1986.

Page 14: Fatty Acids Fatty acids have a long hydrocarbon chain with a carboxyl (acid) group Typical for of fatty acids : CH 3 –(CH 2 ) n –COOH 12

hyperphysics.phy-astr.gsu.edu

www.chemistryland.com

virtuallaboratory.net

http://www.ific.org/publications/reviews/images/irfatschart_2.gif

io.uwinnipeg.ca

bioweb.wku.edu

http://www.wisc-online.com/objects/index_tj.asp?objid=AP13204


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