Process and Automation

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Dissolution testing remains one of the pharmaceutical industry’s most straightforward, least expensive QC tools. Research is focusing on ways to extend its reach, improve in-vitro and in-vivo correlation, and make real-time release testing a reality.

Aerobic bioprocesses are highly dependent upon the oxygen transfer rate (OTR) from sparged to dissolved gas. The relatively low solubility of oxygen, however, makes the choice of mixer impeller configuration a critical design factor for the bioreactor vessel. This article describes a series of experiments and computational fluid dynamics (CFD) simulations to detail the effect of mixer configuration on the efficiency and effectiveness of a bioreactor vessel with respect to blend time and mass transfer.