Volume 6, Issue 2 (2017)                   JFST 2017, 6(2): 127-138 | Back to browse issues page

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Extraction Method Effect on Fat Content and Fatty Acid Composition of Rainbow Trout (Oncorhynchus mykiss). JFST 2017; 6 (2) :127-138
URL: http://jfst.modares.ac.ir/article-6-1138-en.html
Abstract:   (7320 Views)
The effect of different lipid extraction methods (including, Bligh & Dyer, Smeds, Bligh & Dyer using Dichloromethane, Folch, Roese Gottible, Soxhlet used petroleum ether – dry and wet-  and Soxhlet used N-hexane) on total fat and fatty acid composition in rainbow trout (Oncorhynchus mykiss) was investigated. According to the results, the Bligh & Dyer method showed a higher fat extraction efficiency than Soxhlet (wet), Smeds and Roese Gottible, while no significant difference was observed with the other methods. No significant differences were found in total SFA, total MUFA, and total PUFA of different extraction methods. The omega-3/omega-6 ratio ranged between 0.20-0.29. The highest amount of polyene index (PI) was 0.34, but no significant differences were found between different extraction methods. Taking fat quality and quantity, finance, toxicity, and theease of operation, the most efficient method for rainbow trout lipid extraction was the “optimized Bligh & Dyer using Dichloromethane”.  
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Article Type: Research Article | Subject: Sea food processing
Received: 2016/07/4 | Published: 2017/08/23

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