Part 1: Lipids - Kind and sources (1)

Lipids is the general term for a group of compounds, includes oils, fats, waxes, and related compounds. Oils become liquid at room temperature, whereas fats remain solids.
We can classify lipids to 3 main groups. 1) Simple Lipids 2) Compound Lipids 3) Derived Lipids

1).Simple Lipids Consist primarily of triglycerides. It is the major storage form of fat in the fat cells that resides in the adipose depots under the skin. Consist of a glycerol molecule and 3 fatty acids.
Saturated fatty acids:
Chemically when the carbon is maximally bonded with hydrogen.
Primarily in animal products such as beef (52% saturated fatty acids), lamb, pork, chicken, egg yolk and dairy fats of cream, milk, butter (62% saturated fatty acids), and cheese.

Unsaturated fatty acids: Chemically the carbon atoms have double bonds.