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| 低温结晶法富集鳡鱼内脏油中多不饱和脂肪酸 |
| Enrichment of polyunsaturated fatty acids from Yellow cheek carp （Elopichthys bambusa） viscera oil by low temperature crystallization |
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| DOI： |
| 中文关键词: 多不饱和脂肪酸 鱼油 皂化 低温结晶 富集 鳡鱼 |
| 英文关键词:polyunsaturated fatty acids fish oil saponification low temperature crystallization enrichment Yellow cheek carp |
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| 中文摘要: |
| 以95%乙醇为溶剂，碘值和回收率为指标，在单因素试验的基础上，运用正交试验优化低温结晶法富集鳡鱼内脏油中多不饱和脂肪酸（PUFA）的工艺条件。结果表明，最佳工艺条件为：料液比1∶6，结晶温度-30℃，结晶时间5 h；在最佳条件下，PUFA产品的碘值（I）为203.80 g/100 g，回收率为72.82%；富集后PUFA含量提高了24.26个百分点，其中，二十碳五烯酸（EPA）+二十二碳六烯酸（DHA）含量提高了3.81个百分点。 |
| 英文摘要: |
| 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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