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Brehl C, Brass HUC, Lüchtrath C, Böckmann L, Ihling N, Classen T, Pietruszka J, Büchs J. Optimized prodigiosin production with Pseudomonas putida KT2440 using parallelized non-invasive online monitoring. Biotechnol Prog 2022; 38:e3245. [PMID: 35170260 DOI: 10.1002/btpr.3245] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2021] [Revised: 02/09/2022] [Accepted: 02/14/2022] [Indexed: 12/02/2022]
Abstract
The red pigment prodigiosin is of high pharmaceutical interest, due to its potential applications as an antitumor drug and antibiotic agent. As previously demonstrated, Pseudomonas putida KT2440 is a suitable host for prodigiosin production, as it exhibits high tolerance towards the antimicrobial properties of prodigiosin. So far, prodigiosin concentrations of up to 94 mg/L have been achieved in shake flask cultivations. For the characterization and optimization of the prodigiosin production process, the scattered light of P. putida and fluorescence of prodigiosin was measured. The excitation and emission wavelengths for prodigiosin measurement were analyzed by recording 2D fluorescence spectra. The strongest prodigiosin fluorescence was obtained at a wavelength combination of 535/560 nm. By reducing the temperature to 18 °C and using 16 g/L glucose, the prodigiosin concentration was more than doubled compared to the initial cultivation conditions. The obtained results demonstrate the capabilities of parallelized microscale cultivations combined with non-invasive online monitoring of fluorescence for rapid bioprocess development, using prodigiosin as a molecule of current biotechnological interest.
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Affiliation(s)
- Carl Brehl
- AVT - Biochemical Engineering, RWTH Aachen University, Aachen, Germany.,Bioeconomy Science Center (BioSC), Forschungszentrum Jülich GmbH, Jülich, Germany
| | - Hannah U C Brass
- Bioeconomy Science Center (BioSC), Forschungszentrum Jülich GmbH, Jülich, Germany.,Institute of Bioorganic Chemistry, Heinrich Heine University Düsseldorf located at Forschungszentrum Jülich, Jülich, Germany
| | - Clara Lüchtrath
- AVT - Biochemical Engineering, RWTH Aachen University, Aachen, Germany
| | - Lukas Böckmann
- AVT - Biochemical Engineering, RWTH Aachen University, Aachen, Germany
| | - Nina Ihling
- AVT - Biochemical Engineering, RWTH Aachen University, Aachen, Germany.,Bioeconomy Science Center (BioSC), Forschungszentrum Jülich GmbH, Jülich, Germany
| | - Thomas Classen
- Bioeconomy Science Center (BioSC), Forschungszentrum Jülich GmbH, Jülich, Germany.,Institute for Bio- and Geosciences 1: Bioorganic Chemistry (IBG-1), Forschungszentrum Jülich GmbH, Jülich, Germany
| | - Jörg Pietruszka
- Bioeconomy Science Center (BioSC), Forschungszentrum Jülich GmbH, Jülich, Germany.,Institute of Bioorganic Chemistry, Heinrich Heine University Düsseldorf located at Forschungszentrum Jülich, Jülich, Germany.,Institute for Bio- and Geosciences 1: Bioorganic Chemistry (IBG-1), Forschungszentrum Jülich GmbH, Jülich, Germany
| | - Jochen Büchs
- AVT - Biochemical Engineering, RWTH Aachen University, Aachen, Germany.,Bioeconomy Science Center (BioSC), Forschungszentrum Jülich GmbH, Jülich, Germany
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Westerwalbesloh C, Brehl C, Weber S, Probst C, Widzgowski J, Grünberger A, Pfaff C, Nedbal L, Kohlheyer D. A microfluidic photobioreactor for simultaneous observation and cultivation of single microalgal cells or cell aggregates. PLoS One 2019; 14:e0216093. [PMID: 31034529 PMCID: PMC6488086 DOI: 10.1371/journal.pone.0216093] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2019] [Accepted: 04/12/2019] [Indexed: 12/13/2022] Open
Abstract
Microalgae are an ubiquitous and powerful driver of geochemical cycles which have formed Earth’s biosphere since early in the evolution. Lately, microalgal research has been strongly stimulated by economic potential expected in biofuels, wastewater treatment, and high-value products. Similar to bacteria and other microorganisms, most work so far has been performed on the level of suspensions which typically contain millions of algal cells per millilitre. The thus obtained macroscopic parameters average cells, which may be in various phases of their cell cycle or even, in the case of microbial consortia, cells of different species. This averaging may obscure essential features which may be needed for the correct understanding and interpretation of investigated processes. In contrast to these conventional macroscopic cultivation and measuring tools, microfluidic single-cell cultivation systems represent an excellent alternative to study individual cells or a small number of mutually interacting cells in a well-defined environment. A novel microfluidic photobioreactor was developed and successfully tested by the photoautotrophic cultivation of Chlorella sorokiniana. The reported microbioreactor facilitates automated long-term cultivation of algae with controlled temperature and with an illumination adjustable over a wide range of photon flux densities. Chemical composition of the medium in the microbioreactor can be stabilised or modulated rapidly to study the response of individual cells. Furthermore, the algae are cultivated in one focal plane and separate chambers, enabling single-cell level investigation of over 100 microcolonies in parallel. The developed platform can be used for systematic growth studies, medium screening, species interaction studies, and the thorough investigation of light-dependent growth kinetics.
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Affiliation(s)
- Christoph Westerwalbesloh
- Institute of Bio- and Geosciences, IBG-1: Biotechnology, Forschungszentrum Jülich GmbH, Jülich, Germany
| | - Carl Brehl
- Institute of Bio- and Geosciences, IBG-1: Biotechnology, Forschungszentrum Jülich GmbH, Jülich, Germany
| | - Sophie Weber
- Institute of Bio- and Geosciences, IBG-2: Plant Sciences, Forschungszentrum Jülich GmbH, Jülich, Germany
| | - Christopher Probst
- Institute of Bio- and Geosciences, IBG-1: Biotechnology, Forschungszentrum Jülich GmbH, Jülich, Germany
| | - Janka Widzgowski
- Institute of Bio- and Geosciences, IBG-2: Plant Sciences, Forschungszentrum Jülich GmbH, Jülich, Germany
| | - Alexander Grünberger
- Institute of Bio- and Geosciences, IBG-1: Biotechnology, Forschungszentrum Jülich GmbH, Jülich, Germany
- Multiscale Bioengineering, Bielefeld University, Bielefeld, Germany
| | - Christian Pfaff
- Institute of Bio- and Geosciences, IBG-2: Plant Sciences, Forschungszentrum Jülich GmbH, Jülich, Germany
| | - Ladislav Nedbal
- Institute of Bio- and Geosciences, IBG-2: Plant Sciences, Forschungszentrum Jülich GmbH, Jülich, Germany
| | - Dietrich Kohlheyer
- Institute of Bio- and Geosciences, IBG-1: Biotechnology, Forschungszentrum Jülich GmbH, Jülich, Germany
- RWTH Aachen University, Aachener Verfahrenstechnik (AVT.MSB), Aachen, Germany
- * E-mail:
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Brehl C, Brass H, Pietruszka J, Büchs J. Optimized prodigiosin production with Pseudomonas putida
using parallelized non-invasive online measurements. CHEM-ING-TECH 2018. [DOI: 10.1002/cite.201855270] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- C. Brehl
- RWTH Aachen University; Aachener Verfahrenstechnik - Biochemical Engineering; Forckenbeckstraße 51 52074 Aachen Germany
| | - H. Brass
- FZ Jülich; Institute of Bio- and Geosciences, IBG-1: Biotechnology; 52425 Jülich Germany
| | - J. Pietruszka
- FZ Jülich; Institute of Bio- and Geosciences, IBG-1: Biotechnology; 52425 Jülich Germany
| | - J. Büchs
- RWTH Aachen University; Aachener Verfahrenstechnik - Biochemical Engineering; Forckenbeckstraße 51 52074 Aachen Germany
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