Effects of purification process on rheological properties of catfish oil

Document Type

Article

Publication Date

1-1-2003

Abstract

Effects of oil refining steps (degumming, neutralizing, bleaching, and deodorizing) on rheological properties of cat-fish oil were investigated. Four rheological models (Newtonian, Bingham, Herschel-Bulkley, and Casson) were used to fit the experimental data. Refined catfish oil behaves like a Newtonian fluid. Based on the Casson model, the yield stress values of oils gradually decreased after each refining step. The highest shear rate index (0.904) was observed in the deodorized oil. The Casson model was used to predict rheological properties because it works well at both lower and higher shear rates.

Publication Source (Journal or Book title)

JAOCS, Journal of the American Oil Chemists' Society

First Page

829

Last Page

832

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