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Process optimization of enrichment of unsaturated fatty acids in hump oil by urea adduction
  
DOI：10.12166/j.zgyz.1003-7969/2020.04.003
KeyWord:hump oil  urea adduction  unsaturated fatty acid  enrichment
FundProject:内蒙古自治区科技创新引导项目（KCMS2018048）；内蒙古自治区科技重大项目；内蒙古自然科学基金项目（2018BS03017）；双一流学科创新团队建设（NDSC2018-14）；高层次人才引进科研启动项目（NDYB2017-28）
Author NameAffiliation
ZHANG Xia HAO Xiaoli HE Jing Jrimutu 1.Key Laboratory of Dairy Biotechnology and Bioengineering, Ministry of Education, Inner Mongolia Agricultural University, Hohhot 010018, China
2.Inner Mongolia Institute of Camel Research, Badanjilin 737300, Inner Mongolia, China 
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Abstract:
      With mixed fatty acid of refined hump oil (SFA 54.024 3%, MUFA 34.645 7%, PUFA 4645 3%) as raw material, on the basis of single factor experiment, the enrichment process of unsaturated fatty acids in hump oil by urea adduction was optimized by response surface methodology. The results showed that the optimal enrichment process conditions were obtained as follows: ratio of urea mass to 95% ethanol volume 3∶ 8, mass ratio of urea to mixed fatty acid 3.315∶ 1, adduction temperature-2.37 ℃, and adduction time 1813 h. Under these conditions, the iodine value of the product was 125.73 gI/100 g, and the contents of SFA, MUFA and PUFA in the product were 7.802 5%, 58.175 6% and 17322 2% respectively. The product after urea adduction was viscous liquid with light yellow, and the content of unsaturated fatty acid was about 75%.
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