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Study on the complexation extraction of L-phenylalanine from bioconversion solution
Author(s): 
Pages: 36-38
Year: Issue:  3
Journal: JOURNAL OF NANJING UNIVERSITY OF TECHNOLOGY(NATURAL SCIENCE EDITION)

Keyword:  L-苯丙氨酸酶法转化络合萃取;
Abstract: L-苯丙氨酸的分离提取对于促进酶法制备工艺的产业化进程具有重要价值利用络合萃取分配系数、分离选择性高的特点,对苯丙酮酸酶法制备L-苯丙氨酸转化体系中L-苯丙氨酸的络合萃取进行了研究.以二(2-乙基己基)磷酸为萃取制,研究了水相平衡pH、萃取剂浓度和稀释剂的种类对分配系数的影响;并利用D2EHPA-正辛醇体系对酶法制备L-苯丙氨酸的转化液进行了络合萃取研究,经4次萃取和1次反萃,L-苯丙氨酸的萃取率达到98.15%;经1次反萃,L-苯丙氨酸的收率达94.33%.
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