Preparation, evaluation and application of new pseudo-affinity chromatographic supports for penicillin acylase purification

New pseudo-affinity chromatographic supports for penicillin acylase were pr epared and evaluated with three different samples: pure penicillin acylase, industrial clarified feedstock and crude extract. The different gels were studied for their purification fold (three to six) and their recovery power (80-100%). The best support was characterized by its dynamic capacity, (20 mg/ml) and its recovery power was tested at five flow-rates (30, 150, 300 and 750 cm/h) to determine the optimal flow-rate (300 cm/h). In addition we used cleaning in place to test the resistance to hard conditions of saniti zation by 1 M NaOH (90% of recovery for 12 h of contact). These gels may th erefore be used on an industrial scale. (C) 2000 Elsevier Science B.V. All rights reserved.