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| Optimization of supercritical CO2 extraction process for rice germ oil |
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| DOI： |
| KeyWord:rice germ rice germ oil supercritical CO2 extraction fatty acid |
| FundProject:国家“十三五”科技支撑计划项目（2018YFD 0401101） |
| Author Name | Affiliation | | SONG Yuqing1, ZHANG Xue2, LI Zhao2, LIU Chunhua2, WANG Junguo1,
YU Dianyu2, YAO Kai3 | 1.Jilin Business and Technology College, Changchun 130507, China
2.College of Food Science and
Technology, Northeast Agricultural University, Harbin 150030, China
3.Hubei Tianxing Grain and
Oil Co., Ltd., Suizhou 441300, Hubei, China |
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| Abstract: |
| The rice germ oil was extracted by supercritical CO2. With extraction pressure, extraction temperature and extraction time as the response factors, and extraction rate of rice germ oil as the response value, the extraction conditions were optimized by response surface methodology. The results showed that the optimal extraction conditions were obtained as follows: extraction pressure 30 MPa, extraction temperature 40 ℃ and extraction time 120 min. Under these conditions, the extraction rate of rice germ oil was 905%. The contents of saturated fatty acids, monounsaturated fatty acids and polyunsaturated fatty acids in the rice germ oil extracted by supercritical CO2 were 20.62%, 38.62% and 3746% respectively. The contents of γ-oryzanol and phytosterol in rice germ oil were (490.00±563)mg/100 g and (352.28±1152)mg/100 g, respectively. The total content of tocopherol and tocotrienol was (8302±1.49)mg/100 g. |
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