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- W2570290821 abstract "Projections on the profitability of the pharmaceutical industry predict a large amount of growth in the coming years. Stagnation over the last 20 years in product development has led to the search for new processing methods to improve profitability by reducing operating costs or improving process productivity. This work proposes a novel multifeed bioreactor system composed of independently controlled feeds for substrate(s) and media used that allows for the free manipulation of the bioreactor supply rate and substrate concentrations to maximize bioreactor productivity and substrate utilization while reducing operating costs. The optimal operation of the multiple feeds is determined a priori as the solution of a dynamic optimization problem using the kinetic models describing the time‐variant bioreactor concentrations as constraints. This new bioreactor paradigm is exemplified through the intracellular production of beta‐carotene using a three feed bioreactor consisting of separate glucose, ethanol and media feeds. The performance of a traditional bioreator with a single substrate feed is compared to that of a bioreactor with multiple feeds using glucose and/or ethanol as substrate options. Results show up to a 30% reduction in the productivity with the addition of multiple feeds, though all three systems show an improvement in productivity when compared to batch production. Additionally, the breakeven selling price of beta‐carotene is shown to decrease by at least 30% for the multifeed bioreactor when compared to the single feed counterpart, demonstrating the ability of the multifeed reactor to reduce operating costs in bioreactor systems. © 2017 American Institute of Chemical Engineers Biotechnol. Prog. , 33:902–912, 2017" @default.
- W2570290821 created "2017-01-13" @default.
- W2570290821 creator A5003734787 @default.
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- W2570290821 date "2017-02-03" @default.
- W2570290821 modified "2023-10-18" @default.
- W2570290821 title "Economic improvement of continuous pharmaceutical production via the optimal control of a multifeed bioreactor" @default.
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- W2570290821 doi "https://doi.org/10.1002/btpr.2433" @default.
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