摘要
采用尿素包合-分子蒸馏复合法对乙酯化鱼油的棕榈油酸进行富集。尿素包合的条件为反应温度75℃,m鱼油∶m尿素∶m乙醇=1∶2∶4。通过单因素试验研究刮膜转速、进料速度和蒸馏温度对棕榈油酸含量的影响。在单因素试验基础上,应用响应面分析优化得到分子蒸馏富集棕榈油酸的最优条件:设备真空度3.0×10-3 kPa,刮膜转速160 r/min,进料速度0.5 mL/min,蒸馏温度65℃。在此条件下最终产品中棕榈油酸含量从原料油中的8.41%提升到32.29%,回收率为60.5%。
The technology of enriching palmitoleic acid from fish oil fatty acid ethyl ester by urea complexation and molecular distillation was studied.The conditions of urea complexation were reaction temperature:75℃,mfishoil∶murea∶methanol=1∶2∶4.The effects of scrape speed,feed rate and distillation temperature on palmitoleic acid content were investigated through the single factor experiment.On the basis of single factor experiment,the molecular distillationwas optimized by response surface experiments with Box-Behnken design.The final experiment showed that the optimum acetylation conditions were scrape speed 140 r/min,feed speed 1 mL/min,distillation temperature 65℃.Under these conditions,the content of palmitoleic acid in the product increased from 8.41%to 32.29%,and the recovery rate was 60.5%.
作者
曹亚伦
戴志远
沈清
陶美洁
李思敏
叶繁
Cao Yalun;Dai Zhiyuan;Shen Qing;Tao Meijie;Li Simin;Ye Fan(Institute of Seafood,Zhejiang Gongshang University,Hangzhou 310012;State Key Laboratory of Aquatic Processing of Zhejiang Province,Hangzhou 310012)
出处
《中国食品学报》
EI
CAS
CSCD
北大核心
2021年第2期239-246,共8页
Journal of Chinese Institute Of Food Science and Technology
基金
“十三五”国家重点研发计划项目(2018YFD0901103)。
关键词
鱼油
棕榈油酸
尿素包合
分子蒸馏
fish oil
palmitoleic acid
urea complexation
molecular distillation
