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| Enrichment of palmitoleic acid from seabuckthorn fruit oil by low temperature solvent fractionation and molecular distillation composite method |
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| DOI：10.12166/j.zgyz.1003-7969/2020.06.018 |
| KeyWord:low temperature solvent fractionation molecular distillation palmoleic acid seabuckt horn fruit oil |
| FundProject:上海市科技创新行动计划项目（19391904000）；上海市人才发展资金资助(2018126)；上海市青年科技启明星计划资助（19QB1400200) |
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| Abstract: |
| In order to enrich the palmitoleic acid from seabuckthorn fruit oil, with the mixed fatty acids obtained by the hydrolysis of seabuckthorn fruit oil as raw material,the palmitoleic acid was first enriched by the low temperature solvent fractionation method under the conditions of volume ratio of n-hexane-acetone(volume ratio 1∶ 1) to mixed fatty acids 1∶ 1, fractionation temperature -5 ℃ and fractionation time 12 h,then enriched by molecular distillation.The single factor experiment was used to optimize the molecular distillation conditions,and the optimal molecular distillation conditions were obtained as follows:vacuum 5 Pa, distillation temperature 95 ℃, feed rate 1 mL/min and wiper speed 220 r/min. Under these conditions, second molecular distillation was performed, and the content of palmitoleic acid increased from 30.74% in seabuckthorn fruit oil to 72.56%, and the yield of light phase was 30.90%. After further being treated by low temperature solvent fractionation of the product, the content of palmitoleic acid could reach 78.30%. |
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