Immobilization and characterization of L-asparaginase on hollow fibers.

L-Asparaginase was immobilized with various methods: cyanogen bromide, cyanuric chloride and cross-linking with glutaraldehyde. A dialysis device was transformed in a bioreactor with the enzyme immobilized on the outer surface of hollow fibers. Results on kinetic behavior, stability in storage and lyophilization are reported.