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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

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Presentation on theme: "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

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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 { "@context": "http://schema.org", "@type": "ImageObject", "contentUrl": "http://images.slideplayer.com/14/4217692/slides/slide_2.jpg", "name": "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

3 Saturated- Unsaturated Fatty Acids

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

5 Common Fatty Acids Common name Chemical structure Myristoleic acid CH 3 (CH 2 ) 3 CH=CH(CH 2 ) 7 COOH Palmitoleic acid CH 3 (CH 2 ) 5 CH=CH(CH 2 ) 7 COOH Oleic acid CH 3 (CH 2 ) 7 CH=CH(CH 2 ) 7 COOH Linoleic acid CH 3 (CH 2 ) 4 CH=CHCH 2 CH=CH(CH 2 ) 7 COOH α-Linolenic acid CH 3 CH 2 CH=CHCH 2 CH=CHCH 2 CH=CH(CH 2 ) 7 COOH Arachidonic acid CH 3 (CH 2 ) 4 CH=CHCH 2 CH=CHCH 2 CH=CHCH 2 CH=CH(CH 2 ) 3 COOH Eicosapentaenoic acid CH 3 CH 2 CH=CHCH 2 CH=CHCH 2 CH=CHCH 2 CH=CHCH 2 CH=CH(CH 2 ) 3 COOH Erucic acid CH 3 (CH 2 ) 7 CH=CH(CH 2 ) 11 COOH Docosahexaenoic acid CH 3 CH 2 CH=CHCH 2 CH=CHCH 2 CH=CHCH 2 CH=CHCH 2 CH=CHCH 2 CH=CH(CH 2 ) 2 COOH

6 Common Fatty Acids

7 Fats  FAT consists of three- carbon backbone called glycerol attached to three fatty acids, which contain long hydrocarbon chains.

8 Ester Bond Formation

9 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.

10 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.

11 STEROIDS Steroids 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.

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13 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.

14 hyperphysics.phy-astr.gsu.edu www.chemistryland.com virtuallaboratory.net http://www.ific.org/publications/reviews/imag es/irfatschart_2.gif io.uwinnipeg.ca bioweb.wku.edu http://www.wisc- online.com/objects/index_tj.asp?objid=AP13 204


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