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| 尿素包埋法富集椰子油中月桂酸工艺条件优化 |
| Optimization of enrichment conditions of lauric acid in coconut oil by urea adduction fractionation method |
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| DOI： |
| 中文关键词: 椰子油 富集 制备 月桂酸 尿素包埋 |
| 英文关键词:coconut oil enrichment preparation lauric acid urea adduction fractionation |
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| 中文摘要: |
| 研究了尿素包埋法富集椰子油中月桂酸工艺。以椰子油为原料通过皂化酸解制备椰子油混合脂肪酸，然后对混合脂肪酸进行尿素包埋富集月桂酸。通过单因素实验和正交实验法优化，得到影响包埋效果的6个因素的主次顺序为水浴温度>包埋时间>尿素与混合脂肪酸质量比>水浴时间>尿素与甲醇质量比>包埋温度。尿素包埋法富集椰子油中月桂酸的优化工艺条件为：尿素与甲醇质量比1∶?2，包埋温度-20?℃，包埋时间10 h，尿素与混合脂肪酸质量比1∶?1.5，水浴温度50?℃，水浴时间5 h。在优化工艺条件下，富集后月桂酸含量为60.05%，较富集前的50.70%提高了9.35个百分点。 |
| 英文摘要: |
| The urea adduction fractionation method was used to enrich lauric acid in coconut oil. Coconut oil was used as raw material to prepare coconut oil mixed fatty acid by saponification and acid hydrolysis, and then the lauric acid was enriched by urea adduction fractionation from mixed fatty acid. Through single factor experiment and orthogonal experiment optimization, the order of the six factors affecting the embedding effect from high to low was obtained as follows: water bath temperature, embedding time, mass ratio of urea to mixed fatty acid, water bath time, mass ratio of urea to methanol and embedding temperature. The optimal enrichment conditions of lauric acid in coconut oil by urea adduction fractionation method were obtained as follows: mass ratio of urea to methanol 1∶?2, water bath temperature 50?℃, embedding time 10 h, mass ratio of urea to mixed fatty acid 1∶?1.5, water bath time 5 h and embedding temperature -20?℃. Under these conditions, the content of lauric acid after enrichment was 60.05%, increasing by 9.35 percentage points compared with 50.70% of that before enrichment. |
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