LIFESCI 2N03 Lecture Notes - Sterol, Trans Fat, Glycerol
10 Dec 2012
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Document Summary
Triglycerides (95% of dietary fat,99%in body: fats(solid at rt, oils(liquid at rt) Triglycerides have three fatty acids attached to a back bone. Fatty acids can be different, saturated have no double bonds and are most firm at room temperature and have longer shelf lives and last longer. Unsaturation them causes bends in the acid. Cis-fatty acids have a bend and act more like unsaturated fats where as trans fatty acids look and behave more as saturated fatty acids. Unsat- shorter at room temp and shorter shelf life since the double bonds can be oxidized. Location of the double bond is the omega # Type of double bond (cis, trans):cis is softer at room temp and acts more as an unsaturated. Total number of saturated fats minus trans is the amount of cis fats. It is not essential and it is soluble in water.
