Bioreactor with upward flowing impeller system for use in a mammalian cell culture process
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United States of America Patent
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Nov 10, 2015
Grant Date -
Jul 25, 2013
app pub date -
Jul 27, 2012
filing date -
Aug 6, 2008
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Abstract
A bioreactor with an upward flowing impeller system for controlling a mammalian cell culture process is provided. The disclosed system enables control of the cell culture process by controlling the level of dissolved carbon dioxide in the cell culture media and prevent increases in the osmolality level is achieved by enhanced stripping of carbon dioxide via surface gas exchange with little or no damage to the mammalian cells. The use of an upward flow impeller combined with vertical baffles converts the swirling motions of the cell culture media into a largely vertical flow and promotes the removal of dissolved carbon dioxide via surface gas exchange with a sweep gas flowing over the top surface of the cell culture media within the bioreactor vessel.
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