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| 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 |
| KeyWord:Brucea javanica oil unsaturated fatty acid ethyl ester low-temperature solvent crystallization enrichment |
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| Abstract: |
| 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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