CHE327lecture5

CHE327lecture5 - Things to do Things to do 1 Hand in beta carotene report along 1 Hand in beta-carotene report along with TLC plate from part D 2

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Unformatted text preview: Things to do Things to do. 1 Hand in beta carotene report along 1. Hand in beta-carotene report along with TLC plate from part D. 2. Trimyristin experiment. Revise procedure posted on Blackboard posted on Blackboard. 3 Prepare for first Theory Quiz next week 3. Prepare for first Theory Quiz next week (Will cover everything through last week.) This Week: Isolation of Trimyristin 1. Melting point of benzoic acid 2. Extraction of trimyristin from nutmeg ( Revised procedure on Blackboard ) CH 3 (CH 2 ) 12 COOCH 2 CH 3 (CH 2 ) 12 COOCH CH 3 (CH 2 ) 12 COOCH 2 3 2 12 Trimyristin Nutmeg Picture from: < http://en.wikipedia.org/wiki/Nutmeg > Trimyristin from Nutmeg Purpose Isolate a natural product (trimyristin) from its Isolate a natural product (trimyristin) from its source (nutmeg) Purify the natural product to obtain pure material. Nutmeg Nutmeg is the seed of a tropical tree, Myristica fragrans . It is used as a spice to flavor many kinds of foods and beverages. Pictures from: <http://www.uni-graz.at/~katzer/engl/Myri_fra.html> and <http://windom.cybox.com/logs/2001/07.23.html> Major Components of Nutmeg Nutmeg contains 7-10 % essential oils . pinene camphene geranio OH pinene camphene geraniol O O myristicin H 3 CO Major Components of Nutmeg Nutmeg yields 24-30 % nutmeg butter. Nutmeg butter includes aromatic compounds and essential oils, and it is rich in fats. Nutmeg butter is ~75 % trimyristin, the ester of glycerin and myristic acid. CH 3 (CH 2 ) 12 COOCH 2 CH 3 (CH 2 ) 12 COOCH The remaining 60 70% of the nutmeg material is insoluble CH 3 (CH 2 ) 12 COOCH 2 The remaining 60-70% of the nutmeg material is insoluble plant material, primarily cellulose. Lab Procedure Separate soluble material from insoluble material by solid liquid extraction with diethyl material by solid-liquid extraction with diethyl ether (i.e., ether)....
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This note was uploaded on 11/26/2009 for the course CHE 327 taught by Professor Josephlauher during the Fall '08 term at SUNY Stony Brook.

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CHE327lecture5 - Things to do Things to do 1 Hand in beta carotene report along 1 Hand in beta-carotene report along with TLC plate from part D 2

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