SAR HS 251 Lecture Notes - Lecture 9: Enterocyte, Chylomicron, Digestion
10 Oct 2016
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Document Summary
Alpha linolenic acid and linoleic acid are the essential fatty acids. Saturated fatty acids are solid at room temp and unsaturated fats are liquid at room temp. Cholesterol and saturated fat are from animal sources. A fatty acid with a glycerol is a monoglyceride three fatty acids with a glycerol is a triglycerides: entirely hydrophoblic. Glycerol, 2 fatty acids, and a phosphate group: polar head and nonpolar tail. Used as emulsifier in mayonnaise and similar foods: lecithin aka phosphatidylcholine found in cell membranes, synthesized by the liver. Sterols: four connecting rings of carbon and hydrogen. Cholesterol is a sterol found in every cell in body: precursor to vitamin d, sex steroids, and adrenal corticoids. Phytosterols and phytostanols are major plant sterols: unrecognizable by human cells, so used in some margarines to help reduce cholesterol. R is a stand in for fatty acid molecule in cholesterol ester molecule (cholesterol plus fatty acid)
