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| 低温溶剂结晶法富集鸦胆子油不饱和脂肪酸乙酯 |
| Enrichment of unsaturated fatty acid ethyl ester of Brucea javanica oil by low-temperature solvent crystallization |
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| DOI：10.12166/j.zgyz.1003-7969/2020.11.012 |
| 中文关键词: 鸦胆子油 不饱和脂肪酸乙酯 低温溶剂结晶法 富集 |
| 英文关键词:Brucea javanica oil unsaturated fatty acid ethyl ester low-temperature solvent crystallization enrichment |
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| 中文摘要: |
| 以鸦胆子油为原料，经醇解制得脂肪酸乙酯，采用低温溶剂结晶法富集不饱和脂肪酸乙酯，以不饱和脂肪酸乙酯含量、得率为评价指标，分别考察溶剂种类、结晶温度、结晶时间、溶剂与脂肪酸乙酯体积比以及结晶次数对分离效果的影响。结果表明，低温溶剂结晶法富集鸦胆子油不饱和脂肪酸乙酯的最佳条件为：乙醇作为溶剂，溶剂与脂肪酸乙酯体积比3∶ 1，结晶温度-20 ℃，结晶时间7 d，结晶次数2次。在最佳条件下，鸦胆子油脂肪酸乙酯中不饱和脂肪酸乙酯含量由86.49%升高至95.32%，得率为85.4%。 |
| 英文摘要: |
| Fatty acid ethyl ester of Brucea javanica oil was prepared by alcoholysis with Brucea javanica oil, and the unsaturated fatty acid ethyl ester was enriched by low-temperature solvent crystallization.The content and yield of unsaturated fatty acid ethyl ester were used as evaluation indicators, the effects of solvent type, crystallization temperature, crystallization time, volume ratio of solvent to fatty acid ethyl ester and crystallization times on the separation effect were investigated.The results showed that the optimal conditions for enriching unsaturated fatty acid ethyl ester of Brucea javanica oil by low-temperature solvent crystallization were obtained as follows:with ethanol as solvent, volume ratio of solvent to fatty acid ethyl ester 3∶ 1, crystallization temperature-20 ℃, crystallization time 7 d and crystallization times twice.Under these conditions, the content of unsaturated fatty acid ethyl ester in fatty acids ethyl ester of Brucea javanica oil increased from 86.49% to 95.32% with a yield of 85.4%. |
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