S. Ming-ming
2009
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Journal
The Chemical Engineer
Abstract
15N-L-tyrosine was prepared by means of biotransformation of p-hydroxy phenylpyruvic acid and 15N-L-aspartic acid,which made by ourselves,in the presence of aspartate aminotransferase from E.coli.The con-verted liquid was separated and purified,and 15N-L-tyrosine was obtained.The high abundance test gave fairly good results:the enrichment of 15N-L-tyrosine was 98.62%,0.44% decline as compared to the raw material-15N-L-aspartic acid,and the utilization rate of 15N was 40.78%.