BIOC 2580 Lecture Notes - Lecture 13: Trans Fat, Low-Density Lipoprotein, Hydrogenation
9 Jan 2017
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Document Summary
Biological lipids are a structurally diverse group of molecules. They are not defined by their chemical structure, by their common chemical property: hydrophobicity. We use organic solvents to dissolve lipids (typically a 2:1 mixture of chloroform and methanol) Lipids can occur covalently linked to other classes of biomolecules. Glycolipids (eg. sphingolipids, gangliosides) contain both sugar and lipid portions important constituents of cell membranes. The human blood groups (o,a,b) are defined by the glycolipids displayed on the outer surfaces of blood cells. Lipoproteins (eg. vldl, ldl, hdl) plasma lipoproteins that are associated with cardiovascular health and disease. In this course, we will look at: fatty acids. Central immediate in metabolism but free fatty acids present in trace quantities: triacylglycerols. Carboxylic acids with hydrocarbon chains ranging from 4-36 carbons. Fatty acids with no double bonds between carbons in the chain are described as saturated fatty acids.
