Oil production from catfish viscera

Document Type

Article

Publication Date

1-1-2003

Abstract

Oil was extracted from catfish viscera and purified (degummed, neutralized, bleached, and deodorized). The yield of catfish oil after purification was 65.7%. The major yield loss took place during the degumming process. The FA found in crude catfish visceral oil were 14:0, 16:0, 16:1, 18:0, 18:1, 18:2, 18:3, 20:0, 20:1, 20:2, 20:3, 20:4, and 22:6, the predominant FA being 18:1, 16:0, 18:2, and 18:0. The total unsaturated FA in the purified catfish oil amounted to 67.7%. The combined n-3 FA content of the purified catfish oil was 4.6 mg/g of oil. The purified catfish oil contained 1.21 mg/g DHA. FFA, water activity, and some mineral contents decreased during purification. Bleaching removed pigments, thus resulting in oil with greater lightness and less yellowness.

Publication Source (Journal or Book title)

JAOCS, Journal of the American Oil Chemists' Society

First Page

377

Last Page

382

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