期刊
JOURNAL OF OLEO SCIENCE
卷 63, 期 4, 页码 383-390出版社
JAPAN OIL CHEMISTS SOC
DOI: 10.5650/jos.ess13197
关键词
enzymatic; epoxidation; soybean oil; tetradecanoic acid; ionic liquid
资金
- Twelfth Five Year Plan of Science and Technology in Rural Areas of China [2011BAD02B01-6]
- Funding Scheme for Young Teachers in Colleges and Universities in Henan Province [2012GGJS-83]
- National Natural Science Foundation of China [21107090]
An ionic liquid (IL) system for the enzymatic epoxidation of soybean oil was studied. The effects of active oxygen carriers (different fatty acids) and ILs ([Bmim]PF6 and [Bmim]BF4) on the enzymatic epoxidation were investigated. Response surface methodology (RSM) was used to study and optimize the effects of variables (reaction time, reaction temperature, molar ratio of H2O2/C=C-bonds, and molar ratio of fatty acid/C=C-bonds) on the epoxy oxygen group content (EOC) of epoxidized soybean oil (ESO). Results showed that the enzymatic epoxidation of soybean oil can be enhanced using tetradecanoic acid (C13H27COOH) as active oxygen carrier and [Bmim]PF6 as reaction medium. The optimum EOC of ESO was 5.9 +/- 0.3% under the following conditions: reaction temperature 46 degrees C, reaction time 11 h, enzyme load 3% (w/w, relative to the weight of soybean oil), molar ratio of H2O2/C=C-bonds 1.8:1, and molar ratio of C13H27COOH/C=C-bonds 0.5:1.
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