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| 深海粗鱼油的精炼工艺研究 |
| Refining technology of crude deep-sea fish oil |
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| DOI： |
| 中文关键词: 深海鱼油 精炼 酸值 二十二碳六烯酸 二十碳五烯酸 多不饱和脂肪酸 |
| 英文关键词:deep-sea fish oil refining acid value docosahexoenoic acid (DHA) eicosapentaenoic acid(EPA) polyunsaturated fatty acid |
| 基金项目: |
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| 中文摘要: |
| 对深海杂鱼粗鱼油精炼工艺进行优化，考察了磷酸体积分数、超量碱和活性白土添加量对鱼油酸值、回收率和感官品质的影响，并对精炼鱼油的理化指标及脂肪酸组成进行分析。结果表明：适宜的精炼条件为采用占鱼油质量1%、体积分数80%的磷酸脱胶，脱胶油中加入占鱼油质量1.5%的超量碱和理论碱量的NaOH（4 mol/L）脱酸，脱色选用添加占鱼油质量20%的活性白土；精炼鱼油的理化指标均达到我国水产行业精制鱼油的一级标准（SC/T 3502—2000)，酸值（KOH）由（5.52±0.12）mg/g下降到（0.29±0.11）mg/g；精炼工艺对鱼油脂肪酸组成的影响较小，其中二十碳五烯酸和二十二碳六烯酸的总量约占总脂肪酸含量的38%，且分别占多不饱和脂肪酸含量的35.99%和51.59%，品质较优。 |
| 英文摘要: |
| The refining conditions of crude deep-sea fish oil were optimized, and the effects of H3PO4 volume fraction, excess alkali and activated clay dosage on the acid value, recovery rate and sensory quality of fish oil were investigated. The physicochemical indexes and fatty acid composition of refined fish oil were analyzed.The results showed that the optimal refining conditions were obtained as follows: degumming by adding 80% H3PO4 accounting for 1% of fish oil, deacidification by adding 4 mol/L NaOH and excess alkali 1.5% of fish oil, bleaching by adding activated clay accounting for 20% of fish oil. The physicochemical indicators of refined fish oil reached the first-grade standard of refined fish oil of aquatic industry（SC/T 3502—2000), and acid value decreased from (5.52±0.12) mgKOH/g to (0.29±0.11) mgKOH/g. The fatty acid composition didn’t change significantly during the refining. The content of DHA and EPA in the refined fish oil was about 38% of the total fatty acid content, and EPA and DHA accounted for 35.99% and 51.59% of the polyunsaturated fatty acid content respectively, so the quality of refined fish oil was excellent. |
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