ISSN:
1750-3841
Source:
Blackwell Publishing Journal Backfiles 1879-2005
Topics:
Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
,
Process Engineering, Biotechnology, Nutrition Technology
Notes:
Channel catfish (Ictalurus punctutus) were grown in tank culture on diets containing either tallow or menhaden oil at 10% of diet. Processed fish were frozen in air at —18°C or in nitrogen spray at -77°C, sealed in polyethylene, and stored at either -18 or -35°C. Levels and fatty acid profiles were determined for total lipid, triglyceride, phospholipid, and free fatty acids in fresh fish that had been held on ice for 2 days and in frozen fish at 0, 94, 220, and 312 days. Dietary lipids strongly affected fatty acid profiles of all lipid fractions. Free fatty acid production occurred only in fish held on ice and in fish stored at -18°C. Changes in free fatty acid profiles and decreases in phospholipid levels indicated phospholipase activity. After 312 days storage at -18°C free fatty acid levels reached approx 0.93%. Measurable oxidative deterioration did not occur under either condition of frozen storage.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1111/j.1365-2621.1977.tb01497.x
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