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1997
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December
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In the Laboratory
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Photosensitized Peroxidation of Lipids: An Experiment Using 1H-NMR
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Marion W. Smith, Renee Brown, Steven Smullin, and Jon Eager
Muhlenberg College, Department of Chemistry, 2400 Chew Street, Allentown, PA 18104-5586
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December 1997
Vol. 74 No. 12
p. 1471
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| Abstract |
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The photoperoxidation of methyl linoleate, using 5,10,15,20-tetraphenyl porphyrin as photosensitizer, was monitored by 60 MHz 1H-NMR. Samples were irradiated for 10-24 hours in front of a 15 W fluorescent light, and NMR signals in the 5-6 ppm and 10-11 ppm region of the spectrum indicated peroxidation products were formed. The absorption of oxygen from the air was measured by attaching the sample tube to a gas burette. When vitamin E was added to the mixture the extent of peroxidation was reduced, showing the protective effect of the antioxidant. These experiments are appropriate for students of biochemistry
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| More Information |
 Citation |
Smith, Marion W.; Brown, Renee; Smullin, Steven; Eager, Jon. J. Chem. Educ. 1997 74 1471.
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Keywords |
Laboratory Instruction, Instrumental Methods, Photochemistry, NMR Spectrometry, and Bioorganic/Bioinorganic
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History |
Created:
Last Updated: |
July 20, 1999
June 23, 2005
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| Home > JCE Print > Journal of Chemical Education > Issues >
1997
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December
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1471
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