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| 低温溶剂分提与分子蒸馏复合法富集沙棘果油棕榈油酸的工艺研究 |
| 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 |
| 中文关键词: 低温溶剂分提法 分子蒸馏 棕榈油酸 沙棘果油 |
| 英文关键词:low temperature solvent fractionation molecular distillation palmoleic acid seabuckt horn fruit oil |
| 基金项目: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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| 中文摘要: |
| 以沙棘果油水解后的混合脂肪酸为原料，在正己烷-丙酮（体积比1∶ 1）与粗制混合脂肪酸体积比1∶ 1、分提温度-5 ℃、分提时间12 h下采用低温溶剂分提法富集棕榈油酸，再采用分子蒸馏法对低温分提混合脂肪酸进行富集，以达到富集沙棘果油棕榈油酸的目的。通过单因素试验对分子蒸馏条件进行优化，得到最佳的分子蒸馏工艺条件为真空度5 Pa、蒸馏温度95 ℃、进料速度1 mL/min、刮膜器转速220 r/min。在最佳条件下进行二次分子蒸馏，棕榈油酸含量从沙棘果油的3074%提高到72.56%，轻相得率为30.90%。进一步将产物进行低温溶剂分提后，棕榈油酸含量可达78.30%。 |
| 英文摘要: |
| 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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