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Influence of thermal degradation in the physicochemical properties of fish oil

Araújo, K. L. G. V. ; Epaminondas, P. S. ; Silva, M. C. D. ; de Lima, A. E. A. ; Rosenhaim, R. ; Maia, A. S. ; Soledade, L. E. B. ; Souza, A. L. ; Santos, I. M. G. ; Souza, A. G. ; Queiroz, N.

Journal of thermal analysis and calorimetry, 2011-11, Vol.106 (2), p.557-561 [Periódico revisado por pares]

Dordrecht: Springer Netherlands

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Título:
Influence of thermal degradation in the physicochemical properties of fish oil
Autor: Araújo, K. L. G. V. ; Epaminondas, P. S. ; Silva, M. C. D. ; de Lima, A. E. A. ; Rosenhaim, R. ; Maia, A. S. ; Soledade, L. E. B. ; Souza, A. L. ; Santos, I. M. G. ; Souza, A. G. ; Queiroz, N.
Assuntos: Analysis ; Analytical Chemistry ; Biological and medical sciences ; Chemistry ; Chemistry and Materials Science ; Fat industries ; Food industries ; Fundamental and applied biological sciences. Psychology ; Inorganic Chemistry ; Measurement Science and Instrumentation ; Physical Chemistry ; Polymer Sciences ; Unsaturated fatty acids
É parte de: Journal of thermal analysis and calorimetry, 2011-11, Vol.106 (2), p.557-561
Descrição: Physicochemical and thermal analyses were undertaken to evaluate the influence of the temperature on the oxidation of sea fish oil once its polyunsaturated fatty acids deteriorate rapidly. Fish oil displayed four decomposition steps in synthetic air atmosphere and only one step in nitrogen atmosphere. The first step started at 189 and 222 °C for oxidizing and inert atmospheres, respectively. An OIT value of 53 min was measured at 100 °C. After the degradation process the peroxide index and the iodine index reduced from 35.38 to 9.85 meq × 1000 g −1 and from 139.79 to 120.19 gI 2 × 100 g −1 , respectively. An increase of the free fatty acids amount from 0.07 to 0.17% was observed while viscosity increased from 57.2 to 58.0 cP. Absorption at 272 nm also increased. The thermogravimetric and spectroscopic techniques are reproducible and versatile being an option for characterization of edible oil oxidation.
Editor: Dordrecht: Springer Netherlands
Idioma: Inglês

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Influence of thermal degradation in the physicochemical properties of fish oil

Araújo, K. L. G. V. ; Epaminondas, P. S. ; Silva, M. C. D. ; de Lima, A. E. A. ; Rosenhaim, R. ; Maia, A. S. ; Soledade, L. E. B. ; Souza, A. L. ; Santos, I. M. G. ; Souza, A. G. ; Queiroz, N.

Dordrecht: Springer Netherlands

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