310-41 - Organic Lecture Series CH 310 N LECTURE 41 Textbook Assignment Chapter 26 Lipids Homework(for credit POW 13(Due 5/2 Today's Topics

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Organic Lecture Series 1 CH 310 N LECTURE 41 Textbook Assignment: Chapter 26- Lipids Homework (for credit): POW 13 (Due 5/2) “Emergency/Trauma Medicine” John P. Sabra, M.D. John M. Uecker, M.D. Organic Lecture Series 2
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Organic Lecture Series 3 Lipids Lipids include: Øtriglycerides, phospholipids, prostaglandins, prostacyclins, and fat-soluble vitamins Øcholesterol, steroid hormones, and bile acids Organic Lecture Series 4 Triglycerides Triglycerides – example: example: a triglyceride derived from one molecule each of palmitic acid, oleic acid, and stearic acid, the three most abundant fatty acids in the biological world CH 2 OC(CH 2 ) 14 CH 3 CH 2 OC(CH 2 ) 16 CH 3 CH 3 (CH 2 ) 7 CH=CH(CH 2 ) 7 COCH O O O oleate (18:1) stearate (18:0) palmitate (16:0)
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Organic Lecture Series 5 Soaps and Detergents Soaps and Detergents • Natural soaps are prepared by boiling lard or other animal fat with NaOH, in a reaction called saponification (Latin, sapo , soap) Sodium soaps 1,2,3-Propanetriol (Glycerol; Glycerin) A triglyceride (a triester of glycerol) + saponification + CH CH 2 OCR CH 2 OCR CHOH CH 2 OH CH 2 OH RCO 3NaOH 3RCO - Na + O O O O COO - Na + Organic Lecture Series 6 Soaps and Detergents Soaps and Detergents • Soaps clean by acting as emulsifying agents – their long hydrophobic hydrocarbon chains are insoluble in water and tend to cluster in such a way as to minimize their contact with water – their polar hydrophilic carboxylate groups, on the other hand, tend to remain in contact with the surrounding water molecules – driven by these two forces, soap molecules spontaneously cluster into micelles
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Organic Lecture Series 7 – a soap micelle: nonpolar (hydrophobic) hydrocarbon chains cluster in the inside and polar (hydrophilic) carboxylate groups lie on the surface
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This note was uploaded on 05/16/2011 for the course CH 310 N taught by Professor Blocknack during the Spring '08 term at University of Texas at Austin.

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310-41 - Organic Lecture Series CH 310 N LECTURE 41 Textbook Assignment Chapter 26 Lipids Homework(for credit POW 13(Due 5/2 Today's Topics

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