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| 响应面优化大豆粕合成N-月桂酰基复合氨基酸工艺研究 |
| Optimization of synthesis of N-lauroyl composite amino acids from soybean meal by response surface methodology |
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| DOI： |
| 中文关键词: 大豆粕 N-月桂酰基复合氨基酸 响应面法 |
| 英文关键词:soybean meal N-lauroyl composite amino acids response surface methodology |
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| 中文摘要: |
| 以大豆粕为原料，采用加压酸解的方法制备了复合氨基酸溶液，再与月桂酰氯反应合成了N-月桂酰基复合氨基酸表面活性剂。研究了复合氨基酸溶液与月桂酰氯体积比、pH、反应温度、丙酮与复合氨基酸溶液体积比、反应时间对产物产率的影响，以单因素试验为基础，利用响应面法优化了工艺条件，并对酰化产物的表面活性性能进行了测定。结果表明，响应面优化大豆粕合成N-月桂酰基复合氨基酸工艺条件为：复合氨基酸溶液与月桂酰氯体积比3.2∶?1，pH 10.2，反应温度35.5?℃，丙酮与复合氨基酸溶液体积比1.6∶?1，反应时间2 h。在最佳工艺条件下，产物产率为91.31%，产物表面活性性能良好。 |
| 英文摘要: |
| With soybean meal as raw material, composite amino acids solution was prepared by acid hydrolysis under pressure, and N-lauroyl composite amino acids surfactant was synthesized from lauroyl chloride and composite amino acids solution. The effects of volume ratio of composite amino acids solution to lauroyl chloride, pH, reaction temperature, volume ratio of acetone to composite amino acids solution and reaction time on the product yield were studied by single factor experiment, then the process conditions were optimized using response surface methodology, and the surface activity of the acylated product was determined. The results showed that the optimal process conditions of synthesis of N-lauroyl composite amino acids from soybean meal were obtained as follows: volume ratio of composite amino acids solution to lauroyl chloride 3.2∶?1, pH 10.2, reaction temperature 35.5?℃, volume ratio of acetone to composite amino acids solution 1.6∶?1 and reaction time 2 h. Under these conditions, the product yield was 91.31%, and the surface activity of the product was superior. |
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