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| 芝麻油浓缩磷脂提取工艺条件的研究 |
| Extraction of phospholipids concentrate from sesame oil sediment |
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| DOI： |
| 中文关键词: 芝麻油脚 浓缩磷脂 正己烷萃取 水化浓缩 絮凝分离 |
| 英文关键词:sesame oil sediment phospholipids concentrate n-hexane extraction hydration concentration flocculation separation |
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| 中文摘要: |
| 以水代法和机榨法制取的芝麻毛油静置沉淀后的底部沉淀物（即芝麻油脚）为原料，利用正己烷萃取除杂、水化浓缩及絮凝分离的方法从中提取芝麻油浓缩磷脂，并对水化浓缩和絮凝分离的工艺条件进行了研究。结果表明：正己烷萃取除杂（条件为料液比1∶8、时间6 h、温度25℃）后芝麻油脚中固体不溶性杂质含量从21.25%降低至0.04%；水化浓缩的最佳条件为水与萃取除杂油脚质量比4.5∶1、水化时间40 min、水化温度85℃，水化浓缩后丙酮不溶物含量从3.41%提高至45.87%；絮凝分离的最佳条件为预热温度40℃、反应温度90℃、NaCl添加量3%、反应时间20 min，所得浓缩磷脂的丙酮不溶物含量为56.82%。 |
| 英文摘要: |
| The crude sesame oil produced by aqueous extraction or pressing was placed，and the deposit (sesame oil sediment) was used as raw material，and phospholipids concentrate was extracted by impurity removal with n-hexane，hydration concentration and flocculation separation. The optimal extraction processes of hydration concentration and flocculation separation were researched. The results showed that the content of insoluble solid impurities decreased from 21.25% to 0.04% by impurity removal with n-hexane under the conditions of ratio of n-hexane to sesame oil sediment 8∶]1，time 6 h and temperature 25℃. The optimal conditions of hydration concentration were as follows：hydration temperature 85℃，mass ratio of water to sesame oil sediment after impurity removal 4.5∶1，hydration time 40 min；under these conditions，the content of acetone insoluble matter increased from 3.41% to 45.87%. The optimal conditions of flocculation separation were as follows：preheating temperature 40℃，reaction temperature 90℃，sodium chloride dosage 3%，reaction time 20 min；under these conditions，the acetone insoluble matter content of phospholipid concentrate obtained was 56.82%. |
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