ABSTRACT
There have been a number of excellent reviews on l-aspartate production [2-4] that have focused on the immobilization of the key enzyme, aspartase, and productivity of the immobilized biocatalyst. The aspartase enzyme has only been given cursory consideration with regard to its importance to the overall efficiency of the l-aspartic acid process. This chapter reviews some of the ways in which better aspartase biocatalysts have been produced.
