Friday, October 29, 2010

Cleaning up fish oils

The benefits of n-3 and Omega -3 series is well known, recent reports in the scientific literature on fish oils had caused a media storm. Suggesting that the levels of organic pollutants were higher than the European Unions (EU) maximum permitted levels, however those concerns were short lived as the evidence showed that the levels of organic pollutants found in the European salmon was all well below the EU maximum permitted levels.
Fish that are contaminated with high levels of organic pollutant are usually incinerated to prevent the contamination getting back into the environment. This is a wasteful method of a potential food source and has stimulated improvements in processing technologies to decontaminate these valuable oils. A new two-step process was used on the decontaminated the oils, this was then tested on the species known as the Atlantic salmon.
The diet was prepared by BioMar tech, Centre Denmark and used over the 11-week   period. The study looked at diet and pollutant concentrations; the experiment was run for 11 weeks and the flesh was wrapped and stored at -20 and transported to Stirling University where they were analysed. The results of this research showed that highly nutritious farmed salmon could be reared using the decontaminated oils that are very low in organic pollutants.
                 
       
    
This article was supported by, Ge PRO Aqua, Biomin P.E.P. and Sbae industries and the full article can be found at either International aquafeed online magazine, issuu or on docstoc.

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