What are the three types of polyunsaturated compounds? give examples of all three. 10 page

Polyunsaturated compounds or the polyunsaturated fatty acids are the type of unsaturated fatty acids containing two or more than two carbon-carbon double bonds.

They can be classified into three groups on the basis of their chemical structure:

1. Methylene-interrupted polyenes: contain more than one cis double bonds which are separated by a methylene group. Example: Linoleic acid

2. Conjugated fatty acids: contain at least one double pair which is separated by a single bond. Example: Punicic acid

3. Other polyunsaturated fatty acids. Example: Pinolenic acid