Novel parallel bioreactor systems at a milliliter scale were recently developed for the design and improvement of biological cultivations. The objective of this work was to identify the reaction parameters that were necessary for a representative scale-down of an industrial manufacturing process to be carried out with the new technology. The process for the production of riboflavin with
Bacillus subtilis, operated in a controlled fed-batch mode, served as an example for investigations in stirred tank reactors at a 3 L scale and at a 10 mL scale. Automated at-line analyses were established for 48 parallel milliliter vessels to be controlled by a laboratory robot. Despite an intermittent process operation – eight needles of the pipetting robot served 48 milliliter bioreactors – the transfer of the complex riboflavin production process into the milliliter system was achieved for the first time. In the future, this may allow a fast evaluation of process strategies, for example the application of new bacterial strains, for the biotechnological manufacturing of riboflavin under technically relevant conditions.
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Novel parallel bioreactor systems at a milliliter scale were recently developed for the design and improvement of biological cultivations. The objective of this work was to identify the reaction parameters that were necessary for a representative scale-down of an industrial manufacturing process to be carried out with the new technology. The process for the production of riboflavin with
Bacillus subtilis, operated in a controlled fed-batch mode, served as an example for investigations in stirred...
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