食品科学 ›› 2007, Vol. 28 ›› Issue (4): 64-68.

• 基础研究 • 上一篇    下一篇

模拟移动床连续分离L-苯丙氨酸的研究

 吴昊, 韦萍, 万红贵, 何若平, 于荣华, 张赣道   

  1. 南京工业大学制药与生命科学学院; 南京工业大学制药与生命科学学院 江苏 南京 210009; 江苏 南京 210009;
  • 出版日期:2007-04-15 发布日期:2011-12-31

Study on L-phenylalanine Separation by Simulated Moving Bed

WU  Hao, WEI  Ping, WAN  Hong-Gui, HE  Ruo-Ping, YU  Rong-Hua, ZHANG  Gan-Dao   

  1. College of Life Science and Pharmacy,Nanjing University of Technology,Nanjing 210009,China
  • Online:2007-04-15 Published:2011-12-31

摘要: 利用模拟移动床结合离子交换法从酶转化液中连续分离L-苯丙氨酸。在模拟移动床分离过程中,L-苯丙氨酸的吸附波稳定在区Ⅲ,吸附损失为零,单位质量树脂对L-苯丙氨酸的吸附量可达到125g/kg树脂,提高了树脂利用率:利用区Ⅰ的解吸尾流解吸杂质,L-天冬氨酸、蛋白等杂质的解吸波稳定在区Ⅱ,先于L-苯丙氨酸脱离模拟移动床分离系统;L-苯丙氨酸在区Ⅰ被集中解吸,解吸液中L-苯丙氨酸的浓度达35g/L。实验结果表明该法的L-苯丙氨酸解吸收率达97.6%,单位质量L-Phe的氨水(0.5mol/L)消耗率仅为38.37L/kg。

关键词: L-苯丙氨酸, 模拟移动床, 离子交换, 吸附, 解吸

Abstract: A new separation method of L-phenylalanine(L-Phe)from liquid of transformation was studied,and based on ion exchange and continuous separation by simulated moving bed(SMB)with standing wave design.The results showed that adsorption wave of L-Phe stays in zoneⅢwithout any adsorption loss,and the adsorptive capacity of L-Phe is 125g/kg resin, wheres the utilization of resin is improved.Desorption waves of asparagic acid and protein stay in zoneⅡby wake flow of the extract firm zoneⅠand desorption wave of L-Phe stays in zone L The L-Phe concentration of elution is above 35g/L,while 97.6% L-Phe is obtained from desorption by simulated moving bed with ammonia consumption(0.5mol/L)rate of L-Phe only 38.37L/kg.

Key words: L-phenylalanine, simulated moving bed, ion exchange, adsorption, desorption