Repurposing Inflatable Packaging Pillows as Bioreactors: a Convenient Synthesis of Glucosone by Whole-Cell Catalysis Under Oxygen
| Autor: | Thomas J. Schwartz, Kolby Hirth, Michael D. Mozuch, Philip J. Kersten |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Bioreactor
chemistry.chemical_element Bioengineering 01 natural sciences Applied Microbiology and Biotechnology Biochemistry Oxygen Article Glucosone Catalysis 03 medical and health sciences Bioreactors Ketoses Escherichia coli Product Packaging Molecular Biology 030304 developmental biology chemistry.chemical_classification Pyranose 2-oxidase 0303 health sciences Phanerochaete chrysosporium biology 010405 organic chemistry General Medicine Electron acceptor Catalase 0104 chemical sciences Biorefinery Chemical engineering Pyranose chemistry Biocatalysis Oxygen limitation biology.protein Whole-cell catalysis Stoichiometry Biotechnology |
| Zdroj: | Applied Biochemistry and Biotechnology |
| ISSN: | 1559-0291 0273-2289 |
| Popis: | Biocatalysis using molecular oxygen as the electron acceptor has significant potential for selective oxidations at low cost. However, oxygen is poorly soluble in water, and its slow rate of mass transfer in the aqueous phase is a major obstacle, even for laboratory-scale syntheses. Oxygen transfer can be accelerated by vigorous mechanical methods, but these are often incompatible with biological catalysts. Gentler conditions can be achieved with shallow, high surface area bag reactors that are designed for single use and generally for specialized cell culture applications. As a less-expensive alternative to these high-end bioreactors, we describe repurposing inflatable shipping pillows with resealable valves to provide high surface area mixing under oxygen for preparative synthesis of glucosone (D-arabino-hexos-2-ulose) from D-glucose using non-growing Escherichia coli whole cells containing recombinant pyranose 2-oxidase (POX) as catalyst. Parallel reactions permitted systematic study of the effects of headspace composition (i.e., air vs 100% oxygen), cell density, exogenous catalase, and reaction volume in the oxidation of 10% glucose. Importantly, only a single charge of 100% oxygen is required for stoichiometric conversion on a multi-gram scale in 18 h with resting cells, and the conversion was successfully repeated with recycled cells. Supplementary Information The online version contains supplementary material available at 10.1007/s12010-020-03448-x. |
| Databáze: | OpenAIRE |
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