| 辛茜，陈德经，陈小华，等.水酶法与热熔法提取大鲵油的精制工艺和品质比较研究[J].中国油脂,2018,43(12):.[XIN Xi， CHEN Dejing，CHEN Xiaohua，etc.Refining process and quality comparison of Chinese giant salamander oils extracted by aqueous enzymatic method and hot melt method[J].China Oils and Fats,2018,43(12):.] |
| 水酶法与热熔法提取大鲵油的精制工艺和品质比较研究 |
| Refining process and quality comparison of Chinese giant salamander oils extracted by aqueous enzymatic method and hot melt method |
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| DOI： |
| 中文关键词: 大鲵油 水酶法 热熔法 精制 品质 脂肪酸 |
| 英文关键词:Chinese giant salamander oil aqueous enzymatic method hot melt method refining quality fatty acid |
| 基金项目: |
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| 中文摘要: |
| 研究水酶法和热熔法提取大鲵油的精制工艺及品质差异。采用风味蛋白酶酶解和热熔提取的大鲵油经0.2%质量分数80%的磷酸脱胶，1.5%质量分数为6.67%氢氧化钠溶液脱酸，4%复合脱色剂脱色，料液比1∶?3质量分数2%的茶多酚-酵母复合液脱腥，再经115?℃、真空度0.08 MPa减压脱臭1 h，测定两种大鲵油的理化性质和脂肪酸组成。结果表明：水酶油和热熔油的提取率分别为75.85%、75.54%，脱色率分别为42.83%、33.61%，经茶多酚-酵母复合液脱腥后的水酶油腥味低于热熔油，精制水酶油符合我国水产行业精制鱼油的一级标准，精制热熔油符合水产行业精制鱼油的二级标准；水酶油中不饱和脂肪酸含量为76.8%，EPA、DHA含量分别为3.5%、4.2%，高于热熔油的。水酶法提取大鲵油的品质优于热熔法制备的大鲵油。 |
| 英文摘要: |
| The refining process and quality differences of Chinese giant salamander oils extracted by aqueous enzymatic method and hot melt method were studied. Chinese giant salamander oil was prepared respectively by flavor protease enzymatic method and hot melt method, then degummed by 0.2% of phosphate with mass fraction 80%, deacidified by 1.5% of NaOH with mass fraction 6.67%, bleached by 4% of compound decolorant, deodorized by volume ratio of material to tea polyphenol-yeast complex solution (mass fraction 2%) 1∶?3, and deodorized for 1 h at 115?℃ under vacum degree 0.08 MPa,and the refined oils were obtained. The physicochemical properties and fatty acid compositions of the two refined Chinese giant salamander oils were determined. The results showed that the extraction rates of aqueous enzyme oil and hot melt oil were 75.85% and 75.54% respectively, and the bleaching rates were 4283% and 33.61% respectively,and the fishy smell of aqueous enzyme oil deodorized by tea polyphenol-yeast complex solution was lower than that of hot melt oil. The refined aqueous enzyme oil met the first grade standard of refined fish oil in Chinese aquatic industry, and the hot melt oil met the secondary standard of refined fish oil in the aquatic industry. The contents of unsaturated fatty acid, EPA and DHA in the aqueous enzyme oil was 76.8%, 3.5% and 4.2%, respectively,which were higher than those of hot melt oil. The quality of Chinese giant salamander oil extracted by aqueous enzymatic method was better than that by hot melt method. |
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