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| Enrichment of polyunsaturated fatty acids from Yellow cheek carp （Elopichthys bambusa） viscera oil by low temperature crystallization |
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| KeyWord:polyunsaturated fatty acids fish oil saponification low temperature crystallization enrichment Yellow cheek carp |
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| Abstract: |
| With 95% ethanol as solvent，iodine value and recovery rate as indicators,the process conditions of concentrating polyunsaturated fatty acids（PUFA）from Yellow cheek carp viscera oil by low temperature crystallization were optimized by orthogonal experiment based on the single factor experiment. The results showed that the optimal enrichment conditions were obtained as follows：ratio of material to liquid 1∶6，crystallization temperature－30℃ and crystallization time 5 h. Under these conditions，the iodine value and recovery rate of the PUFA product were 203.80 gI/100 g and 72.82% respectively. After enrichment，the PUFA content of Yellow cheek carp viscera oil increased by 24.26 percentage points, in which the total content of EPA and DHA increased by 3.81 percentage points. |
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