食品科学 ›› 2012, Vol. 33 ›› Issue (18): 250-253.

• 分析检测 • 上一篇    下一篇

相分离法在丙氨酸分离中的应用

冷一欣,顾长宏,黄春香   

  1. 常州大学石油化工学院
  • 收稿日期:2011-07-19 修回日期:2012-07-24 出版日期:2012-09-25 发布日期:2012-09-07
  • 通讯作者: 顾长宏 E-mail:guchanghong000@163.com

Application of Phrase Separation in Alanine Purification

  • Received:2011-07-19 Revised:2012-07-24 Online:2012-09-25 Published:2012-09-07

摘要: 采用相分离法分离卤代酸法生产的丙氨酸。在20℃条件下,粗品与洗涤液质量比为1:16,对丙氨酸粗产品进行分离,考察相分离洗涤液循环次数对氯化铵脱除率、丙氨酸纯度、丙氨酸回收率的影响。结果表明:洗涤循环10次时,氯化铵脱除率达到88.0%以上,丙氨酸的纯度大于98.0%,平均回收率为93.6%。相分离操作简单,分离效果较好,适于卤代酸法生产丙氨酸的分离和纯化。

关键词: 丙氨酸, 相分离, 氯化铵, 提纯

Abstract: This work reports the application of phase separation for the separation of alanine produced with halogenated carboxylic acid. The purification of crude alanine with washing solution at a solid-to-solvent ratio of 1:16 was carried out under the condition of 20 ℃ to investigate the effect of number of washing cycles on the removal rate of ammonium chloride and the recovery and purity of alanine. Over 88.0% of the impurity ammonium chloride was removed after the tenth washing cycle and the purity and average recovery of alanine were larger than 98.0% and equal to 93.6%, respectively. The process of phase separation was easy, effective and suitable for the separation and purification of alanine produced by halogenated carboxylic acid method.

Key words: alanine, phrase separation, ammonium chloride, purification

中图分类号: