Kinetic analysis of temperature-programmed autoxidation of ethyl eicosapentaenoate and ethyl docosahexaenoate

On the basis of an autocatalytic and a first order reaction kinetics, a nonisothermal oxidation reaction model was developed for n-3 polyunsaturated fatty acid (PUFA) under temperature-programmed linear heating conditions. With this model, the activation energy of oxidative reaction can easily be ob...

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Bibliographic Details
Published in:Bioscience, biotechnology, and biochemistry biotechnology, and biochemistry, 1999-01, Vol.63 (8), p.1336-1339
Main Authors: Yoshii, H. (Tottori Univ. (Japan)), Furuta, T, Itoh, T, Misawa, Y, Hata, N, Kobayashi, H, Linko, Y.Y, Linko, P
Format: Article
Language:English
Subjects:
ACIDE GRAS POLYINSATURE
ACIDOS GRASOS POLIINSATURADOS
Biological and medical sciences
DHA
EPA
ESTER
ESTERES
ESTERS
Fat industries
Food industries
Fundamental and applied biological sciences. Psychology
kinetic energy
OXIDACION
OXIDATION
OXYDATION
POLYUNSATURATED FATTY ACIDS
TEMPERATURA
TEMPERATURE
temperature-programmed autoxidation
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Summary:On the basis of an autocatalytic and a first order reaction kinetics, a nonisothermal oxidation reaction model was developed for n-3 polyunsaturated fatty acid (PUFA) under temperature-programmed linear heating conditions. With this model, the activation energy of oxidative reaction can easily be obtained with at least three linear heating conditions. The temperature-programmed oxidation experiments of ethyl eicosapentaenoate and ethyl docosahexaenoate were done under linear heating conditions of 4 to 12 K/h. The activation energies and the frequency factors obtained were in good agreement with those by the isothermal oxidation experiments reported previously.
ISSN:0916-8451
1347-6947
DOI:10.1271/bbb.63.1336