首页|尿素包合法富集裂壶藻油中多不饱和脂肪酸的工艺

尿素包合法富集裂壶藻油中多不饱和脂肪酸的工艺

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将冬化裂壶藻油转化为乙酯型藻油,以此为原料研究了尿包合法富集多不饱和脂肪酸的工艺.通过单因素试验比较不同的后处理方式、冷却结晶温度、时间、乙醇浓度、脲酯比,以及醇脲比对尿素包合的影响,并通过正交试验获得较优的工艺条件.结果表明,采用优选的后处理方式可提高参与包合作用的尿素比例,从而使非尿素包合组分中含有更高的多不饱和脂肪酸,在较优的工艺条件下,乙酯型藻油的二十二碳六烯酸和二十二碳五烯酸含量可由47.17%、13.93%分别提高到73.20%、19.87%.
Enrichment of Polyunsaturated Fatty Acids in Oil from Schizochytrium sp.by Urea Inclusion Method
This paper focused on the concentration of polyunsaturated fatty acids(PUFA)in ethyl esters(EE)converted from winterized Schizochytrium sp.oil via urea inclusion method.The impact of various post-treatment methods,cooling temperatures,cooling times,ethanol concentrations,urea/EE ratios,and ethanol/urea ratios,on the urea inclusion process was investigated through one-way tests,and orthogonal tests were conducted to determine the optimal process conditions.The results demonstrated that the utilization of the optimized post-treatment method significantly enhanced the involvement of urea in the inclusion process with EE,resulting in an increased PUFA content in the non-urea included frac-tions.Under the optimized conditions,the contents of docosahexaenoic acid and docosapentaenoic acid in the EE-type microalgal oil were improved from 47.17%and 13.93%to 73.20%and 19.87%,respec-tively.

urea inclusionSchizochytrium sp.docosahexaenoic acid(DHA)docosapentaenoic acid(DPA)polyunsaturated fatty acid

孙兆敏、龚菲菲、刘萌、李颖、宋金平、黄海华、倪辉、余蕾

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厦门海洋职业技术学院海洋生物学院,福建厦门 361102

威海市海洋功能性脂质重点实验室,山东威海 266003

威海博宇食品有限公司,山东威海 266003

福建海富特生物科技股份有限公司,福建福州 350311

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尿素包合 裂壶藻 二十二碳六烯酸(DHA) 二十二碳五烯酸(DPA) 多不饱和脂肪酸

福建省中青年教师教育科研项目福建省中青年教师教育科研项目厦门海洋职业技术学院科研项目高层次人才科研专项厦门海洋职业技术学院科研项目高层次人才科研专项厦门海洋职业技术学院教师教学创新团队项目

JAT210803JAT210801KYG202207KYG202108

2024

福建技术师范学院学报
福建师大福清分校

福建技术师范学院学报

影响因子:0.272
ISSN:1008-3421
年,卷(期):2024.42(2)
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