ANSI 3543 Lecture Notes - Lecture 5: Prostaglandin, Cholesterol, Low-Density Lipoprotein
Document Summary
Have one thing in common: water insoluble. Energy density: one gram of fat= 9. 45 kcals gross energy, one gram cho = 4. 2 kcals gross energy, fat has 2. 25x more energy, related to the ratio of o:h in molecule. 2 types: saturated- single bonds (solid at room temp, unsaturated double bonds (liquid at room temp) More prone to oxidation too much heat, moisture, will become rancid. Monoglyceride (glycerol backbone + one fatty acid) - can be in alpha, beta, delta positions. Triglycerides containing primarily unsaturated fatty acids are liquid at room temperature: chain length. Longer chained fats tend to be solids at room temperature. Sources of energy: oxidation of fat yields co2 + h2o + energy, 2. 25 times more than cho, as far as cost, it can be cheap. Carrier of absorption: fat soluble vitamins from gut, in blood as lipo-protein complexes.
