1
|
Fath V, Lau P, Greve C, Weller P, Kockmann N, Röder T. Simultaneous self-optimisation of yield and purity through successive combination of inline FT-IR spectroscopy and online mass spectrometry in flow reactions. J Flow Chem 2021. [DOI: 10.1007/s41981-021-00140-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
AbstractSelf-optimisation constitutes a very helpful tool for chemical process development, both in lab and in industrial applications. However, research on the application of model-free autonomous optimisation strategies (based on experimental investigation) for complex reactions of high industrial significance, which involve considerable intermediate and by-product formation, is still in an early stage. This article describes the development of an enhanced autonomous microfluidic reactor platform for organolithium and epoxide reactions that incorporates a successive combination of inline FT-IR spectrometer and online mass spectrometer. Experimental data is collected in real-time and used as feedback for the optimisation algorithms (modified Simplex algorithm and Design of Experiments) without time delay. An efficient approach to handle intricate optimisation problems is presented, where the inline FT-IR measurements are used to monitor the reaction’s main components, whereas the mass spectrometer’s high sensitivity permits insights into the formation of by-products. To demonstrate the platform’s flexibility, optimal reaction conditions of two organic syntheses are identified. Both pose several challenges, as complex reaction mechanisms are involved, leading to a large number of variable parameters, and a considerable amount of by-products is generated under non-ideal process conditions. Through multidimensional real-time optimisation, the platform supersedes labor- and cost-intensive work-up procedures, while diminishing waste generation, too. Thus, it renders production processes more efficient and contributes to their overall sustainability.
Graphical abstract
Collapse
|
2
|
Klement T, Kockmann N, Schwede C, Röder T. Kinetic Measurement of Acrylic Acid Polymerization at High Concentrations under Nearly Isothermal Conditions in a Pendula Slug Flow Reactor. Ind Eng Chem Res 2021. [DOI: 10.1021/acs.iecr.0c04732] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Torsten Klement
- Institute of Chemical Process Engineering, Mannheim University of Applied Sciences, Paul-Wittsack-Strasse 10, Mannheim, 68163, Germany
- Faculty of Biochemical and Chemical Engineering, Laboratory of Equipment Design, TU Dortmund University, Emil-Figge-Strasse 70, Dortmund, 44227, Germany
| | - Norbert Kockmann
- Faculty of Biochemical and Chemical Engineering, Laboratory of Equipment Design, TU Dortmund University, Emil-Figge-Strasse 70, Dortmund, 44227, Germany
| | - Christian Schwede
- BASF SE, RCP/ME-B01, Carl-Bosch-Strasse 38, Ludwigshafen am Rhein, 67056, Germany
| | - Thorsten Röder
- Institute of Chemical Process Engineering, Mannheim University of Applied Sciences, Paul-Wittsack-Strasse 10, Mannheim, 68163, Germany
| |
Collapse
|
3
|
Klement T, Hanf S, Wolff F, Kockmann N, Schunk SA, Röder T. Oscillating droplet reactor – towards kinetic investigations in heterogeneous catalysis on a droplet scale. REACT CHEM ENG 2021. [DOI: 10.1039/d0re00466a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In this work we present a new concept of a millistructured capillary reactor setup for contactless kinetic measurements via in-line Raman spectroscopy for three phase reactions in single slugs.
Collapse
Affiliation(s)
- Torsten Klement
- Mannheim University of Applied Sciences
- Institute of Chemical, Process Engineering
- 68163 Mannheim
- Germany
| | | | - Fabian Wolff
- Mannheim University of Applied Sciences
- Institute of Chemical, Process Engineering
- 68163 Mannheim
- Germany
| | - Norbert Kockmann
- Technische Universität Dortmund
- Fakultät für Bio- und Chemieingenieurwesen, Apparatedesign
- 44227 Dortmund
- Germany
| | | | - Thorsten Röder
- Mannheim University of Applied Sciences
- Institute of Chemical, Process Engineering
- 68163 Mannheim
- Germany
| |
Collapse
|
4
|
Klement T, Röder T, Kockmann N. Kinetic measurements of acrylic acid polymerization in a pendular slug reactor. CHEM-ING-TECH 2020. [DOI: 10.1002/cite.202055217] [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: 11/05/2022]
Affiliation(s)
- T. Klement
- Mannheim University of Applied Sciences Institute of Chemical Process Engineering Paul-Wittsack-Str. 10 68163 Mannheim Germany
| | - T. Röder
- Mannheim University of Applied Sciences Institute of Chemical Process Engineering Paul-Wittsack-Str. 10 68163 Mannheim Germany
| | - N. Kockmann
- TU Dortmund University Department of Biochemical and Chemical Engineering, Laboratory of Equipment Design Emil-Figge-Str. 66 44227 Dortmund Germany
| |
Collapse
|
5
|
Fath V, Lau P, Greve C, Kockmann N, Röder T. Self‐optimization of organic syntheses in an automated‐flow microreactor system using Simplex and DoE. CHEM-ING-TECH 2020. [DOI: 10.1002/cite.202055124] [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: 11/10/2022]
Affiliation(s)
- V. Fath
- TU Dortmund University Department of Biochemical and Chemical Engineering, Equipment Design Emil-Figge-Str. 61 44227 Dortmund Germany
- Mannheim University of Applied Sciences Institute of Chemical Process Engineering Paul-Wittsack-Str. 10 68163 Mannheim Germany
| | - P. Lau
- Merck KGaA Frankfurter Str. 250 64293 Darmstadt Germany
| | - C. Greve
- Merck KGaA Frankfurter Str. 250 64293 Darmstadt Germany
| | - N. Kockmann
- TU Dortmund University Department of Biochemical and Chemical Engineering, Equipment Design Emil-Figge-Str. 61 44227 Dortmund Germany
| | - T. Röder
- Mannheim University of Applied Sciences Institute of Chemical Process Engineering Paul-Wittsack-Str. 10 68163 Mannheim Germany
| |
Collapse
|
6
|
Affiliation(s)
- Clarissa V. Benzin
- TU Dortmund University Laboratory of Equipment Design Emil-Figge-Strasse 68 44227 Dortmund Germany
- Hochschule Mannheim University of Applied Sciences Institute of Chemical Process Engineering Paul-Wittsack-Strasse 10 68163 Mannheim Germany
| | - Norbert Kockmann
- TU Dortmund University Laboratory of Equipment Design Emil-Figge-Strasse 68 44227 Dortmund Germany
| | - Thorsten Röder
- Hochschule Mannheim University of Applied Sciences Institute of Chemical Process Engineering Paul-Wittsack-Strasse 10 68163 Mannheim Germany
| |
Collapse
|
7
|
Fath V, Lau P, Greve C, Kockmann N, Röder T. Efficient Kinetic Data Acquisition and Model Prediction: Continuous Flow Microreactors, Inline Fourier Transform Infrared Spectroscopy, and Self-Modeling Curve Resolution. Org Process Res Dev 2020. [DOI: 10.1021/acs.oprd.0c00037] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Verena Fath
- Department of Biochemical and Chemical Engineering, Equipment Design, TU Dortmund University, Emil-Figge-Strasse 70, 44227 Dortmund, Germany
- Institute of Chemical Process Engineering, Mannheim University of Applied Sciences, Paul-Wittsack-Strasse 10, 68163 Mannheim, Germany
| | - Philipp Lau
- Merck KGaA, Frankfurter Strasse 250, 64293 Darmstadt, Germany
| | - Christoph Greve
- Merck KGaA, Frankfurter Strasse 250, 64293 Darmstadt, Germany
| | - Norbert Kockmann
- Department of Biochemical and Chemical Engineering, Equipment Design, TU Dortmund University, Emil-Figge-Strasse 70, 44227 Dortmund, Germany
| | - Thorsten Röder
- Institute of Chemical Process Engineering, Mannheim University of Applied Sciences, Paul-Wittsack-Strasse 10, 68163 Mannheim, Germany
| |
Collapse
|
8
|
Fath V, Kockmann N, Otto J, Röder T. Self-optimising processes and real-time-optimisation of organic syntheses in a microreactor system using Nelder–Mead and design of experiments. REACT CHEM ENG 2020. [DOI: 10.1039/d0re00081g] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Comparing an enhanced simplex algorithm with model-free design of experiments, this work presents a flexible platform for multi-objective, real-time optimisation.
Collapse
Affiliation(s)
- Verena Fath
- Department of Biochemical and Chemical Engineering
- Equipment Design
- TU Dortmund University
- 44227 Dortmund
- Germany
| | - Norbert Kockmann
- Department of Biochemical and Chemical Engineering
- Equipment Design
- TU Dortmund University
- 44227 Dortmund
- Germany
| | - Jürgen Otto
- Institute for Applied Thermo- and Fluid Dynamics
- Mannheim University of Applied Sciences
- 68163 Mannheim
- Germany
| | - Thorsten Röder
- Institute of Chemical Process Engineering
- Mannheim University of Applied Sciences
- 68163 Mannheim
- Germany
| |
Collapse
|
9
|
Fath V, Szmais S, Lau P, Kockmann N, Röder T. Model-Based Scale-Up Predictions: From Micro- to Millireactors Using Inline Fourier Transform Infrared Spectroscopy. Org Process Res Dev 2019. [DOI: 10.1021/acs.oprd.9b00265] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Verena Fath
- Department of Biochemical and Chemical Engineering, Equipment Design, TU Dortmund University, Emil-Figge-Str. 70, 44227 Dortmund, Germany
- Institute of Chemical Process Engineering, Mannheim University of Applied Sciences, Paul-Wittsack-Str. 10, 68163 Mannheim, Germany
| | | | - Philipp Lau
- Merck KGaA, Frankfurter Str. 250, 64293 Darmstadt, Germany
| | - Norbert Kockmann
- Department of Biochemical and Chemical Engineering, Equipment Design, TU Dortmund University, Emil-Figge-Str. 70, 44227 Dortmund, Germany
| | - Thorsten Röder
- Institute of Chemical Process Engineering, Mannheim University of Applied Sciences, Paul-Wittsack-Str. 10, 68163 Mannheim, Germany
| |
Collapse
|
10
|
Affiliation(s)
- Verena Fath
- TU Dortmund University, st>Emil-Figge-Strasse 70Department of Biochemical and Chemical Engineering, Equipment Design 44227 Dortmund Germany
- Mannheim University of Applied SciencesInstitute of Chemical Process Engineering Paul-Wittsack-Strasse 10 68163 Mannheim Germany
| | - Norbert Kockmann
- TU Dortmund University, st>Emil-Figge-Strasse 70Department of Biochemical and Chemical Engineering, Equipment Design 44227 Dortmund Germany
| | - Thorsten Röder
- Mannheim University of Applied SciencesInstitute of Chemical Process Engineering Paul-Wittsack-Strasse 10 68163 Mannheim Germany
| |
Collapse
|
11
|
Affiliation(s)
- Torsten Klement
- Mannheim University of Applied SciencesInstitute of Chemical Process Engineering Paul-Wittsack-Straße 10 68163 Mannheim Germany
- TU Dortmund UniversityFaculty of Biochemical and Chemical Engineering, Laboratory of Equipment Design Emil-Figge-Straße 70 44227 Dortmund Germany
| | - Norbert Kockmann
- TU Dortmund UniversityFaculty of Biochemical and Chemical Engineering, Laboratory of Equipment Design Emil-Figge-Straße 70 44227 Dortmund Germany
| | - Thorsten Röder
- Mannheim University of Applied SciencesInstitute of Chemical Process Engineering Paul-Wittsack-Straße 10 68163 Mannheim Germany
| |
Collapse
|
12
|
Illert P, Wängler B, Wängler C, Zöllner F, Uhrig T, Litau S, Pretze M, Röder T. Functionalizable composite nanoparticles as a dual magnetic resonance imaging/computed tomography contrast agent for medical imaging. J Appl Polym Sci 2019. [DOI: 10.1002/app.47571] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Patrick Illert
- Institute of Chemical Process EngineeringMannheim University of Applied Sciences Paul‐Wittsack‐Street 10, 68163 Mannheim Germany
| | - Björn Wängler
- Molecular Imaging and Radiochemistry, Department of Clinical Radiology and Nuclear MedicineMedical Faculty Mannheim of Heidelberg University Theodor‐Kutzer‐Ufer 1‐3, 68167 Mannheim Germany
| | - Carmen Wängler
- Biomedical Chemistry, Department of Clinical Radiology and Nuclear MedicineMedical Faculty Mannheim of Heidelberg University Theodor‐Kutzer‐Ufer 1‐3, 68167 Mannheim Germany
| | - Frank Zöllner
- Computer Assisted Clinical Medicine, Medical Faculty Mannheim of Heidelberg University Theodor‐Kutzer‐Ufer 1‐3, 68167 Mannheim Germany
| | - Tanja Uhrig
- Computer Assisted Clinical Medicine, Medical Faculty Mannheim of Heidelberg University Theodor‐Kutzer‐Ufer 1‐3, 68167 Mannheim Germany
| | - Shanna Litau
- Biomedical Chemistry, Department of Clinical Radiology and Nuclear MedicineMedical Faculty Mannheim of Heidelberg University Theodor‐Kutzer‐Ufer 1‐3, 68167 Mannheim Germany
| | - Marc Pretze
- Molecular Imaging and Radiochemistry, Department of Clinical Radiology and Nuclear MedicineMedical Faculty Mannheim of Heidelberg University Theodor‐Kutzer‐Ufer 1‐3, 68167 Mannheim Germany
| | - Thorsten Röder
- Institute of Chemical Process EngineeringMannheim University of Applied Sciences Paul‐Wittsack‐Street 10, 68163 Mannheim Germany
| |
Collapse
|
13
|
Baumeister T, Zikeli S, Kitzler H, Aigner P, Wieczorek PP, Röder T. Continuous flow synthesis of amine oxides by oxidation of tertiary amines. REACT CHEM ENG 2019. [DOI: 10.1039/c9re00127a] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An efficient, safe and scalable continuous flow process for the synthesis of amine oxides with hydrogen peroxide is described.
Collapse
Affiliation(s)
- Tobias Baumeister
- Institute of Chemical Process Engineering
- Mannheim University of Applied Sciences
- 68163 Mannheim
- Germany
| | | | | | - Paul Aigner
- one-A Engineering Austria GmbH
- 4844 Regau
- Austria
| | - Piotr P. Wieczorek
- Department of Analytical and Ecological Chemistry
- University of Opole
- 45-040 Opole
- Poland
| | - Thorsten Röder
- Institute of Chemical Process Engineering
- Mannheim University of Applied Sciences
- 68163 Mannheim
- Germany
| |
Collapse
|
14
|
Schwolow S, Mutsch B, Kockmann N, Röder T. Model-based scale-up and reactor design for solvent-free synthesis of an ionic liquid in a millistructured flow reactor. REACT CHEM ENG 2019. [DOI: 10.1039/c8re00148k] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Based on kinetic investigations in microreactors, a millistructured plate reactor for a solvent-free ionic liquid synthesis was designed by combining several scale-up concepts to maintain thermal stability.
Collapse
Affiliation(s)
- Sebastian Schwolow
- Mannheim University of Applied Sciences
- Institute of Chemical Process Engineering
- 68163 Mannheim
- Germany
| | - Benedikt Mutsch
- Mannheim University of Applied Sciences
- Institute of Chemical Process Engineering
- 68163 Mannheim
- Germany
| | - Norbert Kockmann
- TU Dortmund University
- Biochemical and Chemical Engineering, Equipment Design
- 44227 Dortmund
- Germany
| | - Thorsten Röder
- Mannheim University of Applied Sciences
- Institute of Chemical Process Engineering
- 68163 Mannheim
- Germany
| |
Collapse
|
15
|
Illert P, Wängler B, Wängler C, Röder T. Size-controllable synthesis of polymeric iodine-carrying nanoparticles for medical CT imaging. POLYM ADVAN TECHNOL 2017. [DOI: 10.1002/pat.4043] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Affiliation(s)
- Patrick Illert
- Institute of Chemical Process Engineering; Mannheim University of Applied Sciences; Paul-Wittsack-Str. 10 68163 Mannheim Germany
| | - Björn Wängler
- Molecular Imaging and Radiochemistry, Department of Clinical Radiology and Nuclear Medicine; Medical Faculty Mannheim of Heidelberg University; Theodor-Kutzer-Ufer 1-3 68167 Mannheim Germany
| | - Carmen Wängler
- Biomedical Chemistry, Department of Clinical Radiology and Nuclear Medicine; Medical Faculty Mannheim of Heidelberg University; Theodor-Kutzer-Ufer 1-3 68167 Mannheim Germany
| | - Thorsten Röder
- Institute of Chemical Process Engineering; Mannheim University of Applied Sciences; Paul-Wittsack-Str. 10 68163 Mannheim Germany
| |
Collapse
|
16
|
Braun F, Schwolow S, Seltenreich J, Kockmann N, Röder T, Gretz N, Rädle M. Highly Sensitive Raman Spectroscopy with Low Laser Power for Fast In-Line Reaction and Multiphase Flow Monitoring. Anal Chem 2016; 88:9368-9374. [DOI: 10.1021/acs.analchem.6b01509] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Frank Braun
- Mannheim University of Applied Sciences, Institute
of Process Control and Innovative Energy Conversion, Paul-Wittsack-Str. 10, 68163 Mannheim, Germany
| | - Sebastian Schwolow
- Mannheim University of Applied Sciences, Institute
of Chemical Process Engineering, Paul-Wittsack-Str. 10, 68163 Mannheim, Germany
| | - Julia Seltenreich
- Mannheim University of Applied Sciences, Institute
of Process Control and Innovative Energy Conversion, Paul-Wittsack-Str. 10, 68163 Mannheim, Germany
| | - Norbert Kockmann
- TU Dortmund University, Biochemical and Chemical
Engineering, Equipment Design, Emil-Figge-Straße 68, 44227 Dortmund, Germany
| | - Thorsten Röder
- Mannheim University of Applied Sciences, Institute
of Chemical Process Engineering, Paul-Wittsack-Str. 10, 68163 Mannheim, Germany
| | - Norbert Gretz
- Medical
Research Center, Medical Faculty Mannheim, University of Heidelberg, Theodor-Kutzer-Ufer 1-3, 68167 Mannheim, Germany
| | - Matthias Rädle
- Mannheim University of Applied Sciences, Institute
of Process Control and Innovative Energy Conversion, Paul-Wittsack-Str. 10, 68163 Mannheim, Germany
| |
Collapse
|
17
|
Kalliski M, Voglauer B, Seyfriedsberger G, Röder T, Engell S. Ressourceneffizienter Betrieb eines Verdampfernetzwerks in der Viskosefaserproduktion. CHEM-ING-TECH 2016. [DOI: 10.1002/cite.201650330] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
|
18
|
Bay S, Baumeister T, Hashmi ASK, Röder T. Safe and Fast Flow Synthesis of Functionalized Oxazoles with Molecular Oxygen in a Microstructured Reactor. Org Process Res Dev 2016. [DOI: 10.1021/acs.oprd.6b00118] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Sarah Bay
- Organisch-Chemisches
Institut, Ruprecht-Karls-Universität Heidelberg, Im Neuenheimer
Feld 270, 69120 Heidelberg, Germany
| | - Tobias Baumeister
- Institute
of Chemical Process Engineering, Mannheim University of Applied Sciences, Paul-Wittsack-Str. 10, 68163 Mannheim, Germany
| | - A. Stephen K. Hashmi
- Organisch-Chemisches
Institut, Ruprecht-Karls-Universität Heidelberg, Im Neuenheimer
Feld 270, 69120 Heidelberg, Germany
- Chemistry
Department, Faculty of Science, King Abdulaziz University (KAU), 21589 Jeddah, Saudi Arabia
| | - Thorsten Röder
- Institute
of Chemical Process Engineering, Mannheim University of Applied Sciences, Paul-Wittsack-Str. 10, 68163 Mannheim, Germany
| |
Collapse
|
19
|
|
20
|
Baumeister T, Kitzler H, Obermaier K, Zikeli S, Röder T. Two-Phase Flow Oxidation of Valeraldehyde with O2 in a Microstructured Reactor. Org Process Res Dev 2015. [DOI: 10.1021/acs.oprd.5b00173] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Tobias Baumeister
- Institute
of Chemical Process Engineering, Mannheim University of Applied Sciences, Paul-Wittsack-Str. 10, 68163 Mannheim, Germany
| | - Hannes Kitzler
- one-A Engineering
Austria, See-Str. 11, 4844 Regau, Austria
| | | | - Stefan Zikeli
- one-A Engineering
Austria, See-Str. 11, 4844 Regau, Austria
| | - Thorsten Röder
- Institute
of Chemical Process Engineering, Mannheim University of Applied Sciences, Paul-Wittsack-Str. 10, 68163 Mannheim, Germany
| |
Collapse
|
21
|
Birkenmeier M, Mack M, Röder T. Thermodynamic and Probabilistic Metabolic Control Analysis of Riboflavin (Vitamin B2) Biosynthesis in Bacteria. Appl Biochem Biotechnol 2015; 177:732-52. [DOI: 10.1007/s12010-015-1776-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2015] [Accepted: 07/21/2015] [Indexed: 11/28/2022]
|
22
|
Schwolow S, Braun F, Rädle M, Kockmann N, Röder T. Fast and Efficient Acquisition of Kinetic Data in Microreactors Using In-Line Raman Analysis. Org Process Res Dev 2015. [DOI: 10.1021/acs.oprd.5b00184] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Sebastian Schwolow
- Mannheim University of Applied Sciences, Institute
of Chemical Process Engineering, Paul-Wittsack-Str. 10, 68163 Mannheim, Germany
| | - Frank Braun
- Mannheim University of Applied Sciences, Institute
of Process Control and Innovative Energy Conversion, Paul-Wittsack-Str. 10, 68163 Mannheim, Germany
| | - Matthias Rädle
- Mannheim University of Applied Sciences, Institute
of Process Control and Innovative Energy Conversion, Paul-Wittsack-Str. 10, 68163 Mannheim, Germany
- Heidelberg University and Mannheim University of Applied Sciences, Institute of Medical Technology, Paul-Wittsack-Str. 10, 68163 Mannheim, Germany
| | - Norbert Kockmann
- TU Dortmund University, Biochemical and Chemical
Engineering, Equipment Design, Emil-Figge-Straße 68, 44227 Dortmund, Germany
| | - Thorsten Röder
- Mannheim University of Applied Sciences, Institute
of Chemical Process Engineering, Paul-Wittsack-Str. 10, 68163 Mannheim, Germany
| |
Collapse
|
23
|
Birkenmeier M, Mack M, Röder T. Erratum to: A coupled thermodynamic and metabolic control analysis methodology and its evaluation on glycerol biosynthesis in Saccharomyces cerevisiae. Biotechnol Lett 2015; 37:317-26. [PMID: 25351807 DOI: 10.1007/s10529-014-1696-x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A coupled in silico thermodynamic and probabilistic metabolic control analysis methodology was verified by applying it to the glycerol biosynthetic pathway in Saccharomyces cerevisiae. The methodology allows predictions even when detailed knowledge of the enzyme kinetics is lacking. In a metabolic steady state, we found that glycerol-3-phosphate dehydrogenase operates far from thermodynamic equilibrium ([Formula: see text] -15.9 to -47.5 kJ mol(-1), where [Formula: see text] is the transformed Gibbs energy of the reaction). Glycerol-3-phosphatase operates in modes near the thermodynamic equilibrium, far from the thermodynamic equilibrium or in between ([Formula: see text] ≈ 0 to -23.7 kJ mol(-1)). From the calculated distribution of the scaled flux control coefficients (median = 0.81), we inferred that the pathway flux is primarily controlled by glycerol-3-phosphate dehydrogenase. This prediction is consistent with previous findings, verifying the efficacy of the proposed methodology.
Collapse
Affiliation(s)
- Markus Birkenmeier
- Institute for Chemical Process Engineering, Mannheim University of Applied Sciences, Paul-Wittsack-Straße 10, 68163, Mannheim, Germany,
| | | | | |
Collapse
|
24
|
Schwolow S, Heikenwälder B, Abahmane L, Kockmann N, Röder T. Kinetic and Scale-up Investigations of a Michael Addition in Microreactors. Org Process Res Dev 2014. [DOI: 10.1021/op5002758] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Sebastian Schwolow
- Institute of Chemical
Process Engineering, Mannheim University of Applied Sciences, Paul-Wittsack-Str. 10, 68163 Mannheim, Germany
| | - Birgit Heikenwälder
- Institute of Chemical
Process Engineering, Mannheim University of Applied Sciences, Paul-Wittsack-Str. 10, 68163 Mannheim, Germany
| | - Lahbib Abahmane
- 3M ESK Ceramics GmbH & Co. KG, Max-Schaidhauf-Str. 25, 87437 Kempten, Germany
| | - Norbert Kockmann
- Biochemical
and Chemical Engineering, Equipment Design, TU Dortmund, Emil-Figge-Straße
68, 44227 Dortmund, Germany
| | - Thorsten Röder
- Institute of Chemical
Process Engineering, Mannheim University of Applied Sciences, Paul-Wittsack-Str. 10, 68163 Mannheim, Germany
| |
Collapse
|
25
|
Birkenmeier M, Mack M, Röder T. A coupled thermodynamic and metabolic control analysis methodology and its evaluation on glycerol biosynthesis in Saccharomyces cerevisiae. Biotechnol Lett 2014; 37:307-16. [DOI: 10.1007/s10529-014-1675-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2014] [Accepted: 09/05/2014] [Indexed: 01/08/2023]
|
26
|
Birkenmeier M, Röder T. Thermodynamik- und Kontrollanalyse der Riboflavin-Biosynthese. CHEM-ING-TECH 2014. [DOI: 10.1002/cite.201450210] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
|
27
|
Schwolow S, Klotz M, Kockmann N, Röder T. Wärmeintegration durch Eduktvorwärmung in Mikroreaktoren. CHEM-ING-TECH 2014. [DOI: 10.1002/cite.201450312] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
|
28
|
Birkenmeier M, Neumann S, Röder T. Kinetic modeling of riboflavin biosynthesis in Bacillus subtilis under production conditions. Biotechnol Lett 2014; 36:919-28. [PMID: 24442413 DOI: 10.1007/s10529-013-1435-8] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2013] [Accepted: 12/12/2013] [Indexed: 11/29/2022]
Abstract
To study the network dynamics of the riboflavin biosynthesis pathway and to identify potential bottlenecks in the system, an ordinary differential equation-based model was constructed using available literature data for production strains. The results confirmed that the RibA protein is rate limiting in the pathway. Under the conditions investigated, we determined a potential limiting order of the remaining enzymes under increased RibA concentration (>0.102 mM) and therefore higher riboflavin production (>0.045 mmol g(CDW)(-1) h(-1) and 0.0035 mM s(-1), respectively). The reductase activity of RibG and lumazine synthase (RibH) might be the next most limiting steps. The computational minimization of the enzyme concentrations of the pathway suggested the need for a greater RibH concentration (0.251 mM) compared with the other enzymes (RibG: 0.188 mM, RibB: 0.023 mM).
Collapse
Affiliation(s)
- Markus Birkenmeier
- Institute of Chemical Process Engineering, Mannheim University of Applied Sciences, Paul-Wittsack-Straße 10, 68163, Mannheim, Germany,
| | | | | |
Collapse
|
29
|
Röder T. Process Understanding. Von I. Houson. CHEM-ING-TECH 2013. [DOI: 10.1002/cite.201390043] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
|
30
|
Affiliation(s)
- Sebastian Schwolow
- Institut für Chemische
Verfahrenstechnik, Hochschule Mannheim,
Paul-Wittsack-Straße 10, 68163 Mannheim, Germany
| | - Jutta Hollmann
- Novartis Pharma AG, Lichtstrasse 35, 4056 Basel, Switzerland
| | | | - Thorsten Röder
- Institut für Chemische
Verfahrenstechnik, Hochschule Mannheim,
Paul-Wittsack-Straße 10, 68163 Mannheim, Germany
| |
Collapse
|
31
|
Birkenmeier M, Röder T. Numerische Simulation des Riboflavin-Stoffwechselwegs. CHEM-ING-TECH 2012. [DOI: 10.1002/cite.201250210] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
32
|
Affiliation(s)
- Thorsten Röder
- a Universität Paderborn, Fakultät für Naturwissenschaften, Department Chemie , Warburger Str. 100, 33098, Paderborn, Germany
| | - Thomas Kramer
- a Universität Paderborn, Fakultät für Naturwissenschaften, Department Chemie , Warburger Str. 100, 33098, Paderborn, Germany
| |
Collapse
|
33
|
Schirra M, Feneberg M, Prinz GM, Reiser A, Röder T, Thonke K, Sauer R. Beating of coupled ultraviolet light modes in zinc oxide nanoresonators. Phys Rev Lett 2009; 102:073903. [PMID: 19257671 DOI: 10.1103/physrevlett.102.073903] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/09/2008] [Revised: 01/20/2009] [Indexed: 05/27/2023]
Abstract
Periodic spatial intensity modulations of near-band-gap luminescence light at 3.36 eV photon energy are reported in nanometer-sized resonators of single zinc oxide nanorods. These modulations are observed when the luminescence light, due to excitonic recombination, is excited by a focused low-energy electron beam scanned along the rods. The acceleration energy of only 2 keV allows for a spatial resolution of a few ten nanometers. Numerical calculations based on the theory of dielectric cylindrical waveguides are performed identifying the intensity modulations as beating patterns of coupled TE01 and TM01 modes in the nanoresonator.
Collapse
Affiliation(s)
- M Schirra
- Institut für Halbleiterphysik, Universität Ulm, 89069 Ulm, Germany
| | | | | | | | | | | | | |
Collapse
|
34
|
Gindl W, Reifferscheid M, Adusumalli RB, Weber H, Röder T, Sixta H, Schöberl T. Anisotropy of the modulus of elasticity in regenerated cellulose fibres related to molecular orientation. POLYMER 2008. [DOI: 10.1016/j.polymer.2007.12.016] [Citation(s) in RCA: 61] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
35
|
Schnablegger H, Glatter O, Röder T. SAXSess - an analytical tool for nanostructured materials. Acta Crystallogr A 2005. [DOI: 10.1107/s0108767305094304] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
|
36
|
|
37
|
|
38
|
Röder T, Kramer T, Huber K, Kitzerow HS. Preparation of Positively and Negatively Charged Organic Colloids from a Single Precursor. MACROMOL CHEM PHYS 2003. [DOI: 10.1002/macp.200300017] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
|
39
|
Röder T, Morgenstern B, Schelosky N, Glatter O. Solutions of cellulose in N , N -dimethylacetamide/lithium chloride studied by light scattering methods. POLYMER 2001. [DOI: 10.1016/s0032-3861(01)00170-7] [Citation(s) in RCA: 58] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
|
40
|
Krüger T, Birke A, Decker T, Röder T, Hein W. [Results of the Elmslie-Trillat procedure in cases of patella(sub)luxation related to chondral pathology]. Unfallchirurg 1999; 102:700-7. [PMID: 10506361 DOI: 10.1007/s001130050468] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
Between May 1981 and December 1993, 120 patients (126 knee joints) were operated using the Elsmlie-Trillat procedure because of patella(sub)luxation. 79 patients were reviewed at an average follow up of 4.1 (1-13.6) years. 46 women and 33 men were operated with an average age at operation of 26.9 (14-59) years. The examination included Bentley's Score, radiological parameters (e. g. grading of patella dislocation), grading of chondromalacia and patient characteristics (e. g. age, pre-operative time). 64 knee joints (70. 3 %) were evaluated 'very good' and 'good', using the score of Bentley. There were significantly worse results in cases with higher grading of chondromalacia (p <0.0036), longer pre-operative time (p < 0.012) and older patients (p < 0.0023). The worst and most highly significant results were in these patients with prior knee surgery (p < 0.0001). A good patella relocation correlated with improved results (p < 0.001). There was no difference in cases with patella dislocation and/or patellasubluxation. In conclusion, the Elmslie-Trillat procedure should be carried out 'in the correct manner and at an early stage'. To optimise the therapy in cases of patella dislocation the high number of operation techniques should be analysed and used regarding risk groups.
Collapse
Affiliation(s)
- T Krüger
- Klinik und Poliklinik für Orthopädie, Martin-Luther-Universität Halle-Wittenberg
| | | | | | | | | |
Collapse
|
41
|
Bickel D, Röder T, Bestmann HJ, Brune K. Identification and characterization of inhibitors of peptido-leukotriene-synthesis from Petasites hybridus. Planta Med 1994; 60:318-322. [PMID: 7938265 DOI: 10.1055/s-2006-959492] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Extracts from Petasites hybridus were found to inhibit peptido-leukotriene biosynthesis in isolated peritoneal macrophages. Chemical analysis by gas chromatography coupled with mass and infrared spectroscopy facilitated the identification of three isomeric oxopetasan esters, petasin, and isopetasin as the main compounds of these extracts. Fractionations obtained by column chromatography of the most effective extract indicated a correlation between peptido-leukotriene biosynthesis inhibition and the content of isopetasin, a sesquiterpene ester of isopetasol and angelic acid, as well as the isomeric oxopetasan esters. Petasin, a structural isomer of isopetasin, however, was found to be inactive. It may even reduce the peptido-leukotrine inhibitory effect of isopetasin. It is concluded that isopetasin and the oxopetasan esters in Petasites hybridus inhibit the biosynthesis of the vasoconstrictive peptido-leukotrienes. This effect may contribute to some of the medicinal properties of Petasites hybridus extracts such as, e.g., gastroprotection and spasmolytic activity.
Collapse
Affiliation(s)
- D Bickel
- Institut für Anatomie, Universität Regensburg, Federal Republic of Germany
| | | | | | | |
Collapse
|
42
|
Tsikas D, Fauler J, Gutzki FM, Röder T, Bestmann HJ, Frölich JC. Gas chromatographic-mass spectrometric determination of leukotriene E4 in human urine using deuterium-labelled leukotriene E4 standards. J Chromatogr 1993; 622:1-7. [PMID: 8120106 DOI: 10.1016/0378-4347(93)80242-v] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
The utility of two deuterium-labelled leukotriene (LT) E4 analogs, e.g. [20,20,20-2H3]LTE4 and [14,15,17,17,18,18-2H6]LTE4, as internal standards for the determination of LTE4 in human urine by gas chromatography-mass spectrometry (GC-MS) was investigated. 2H-Exchange during hydrogenation occurred both in [20,20,20-2H3]LTE4 and [14,15,17,17,18,18-2H6]LTE4 in an extent of 9.4 +/- 0.5% and 67.3 +/- 0.6% (mean +/- S.D., n = 6), respectively. The lower extent of 2H-exchange in [20,20,20-2H3]LTE4 allowed a more accurate quantitation than the use of [14,15,17,17,18,18-2H6]LTE4. Applying [20,20,20-2H3]LTE4 as internal standard the coefficients of variation for the intra- and inter-assay determination of LTE4 in human urine were 5.7% and 6.2% (n = 4), respectively. The inter-assay coefficient of variation for [14,15,17,17,18,18-2H6]LTE4 was 15%. Using [20,20,20-2H3]LTE4 as internal standard and GC-MS, healthy volunteers were found to excrete 17 +/- 10 nmol LTE4 per mol creatinine (mean +/- S.D., n = 11). Similar excretion rates for LTE4 in urine of healthy volunteers were found using GC-tandem MS with [1,1-18O2]LTE4 as internal standard. Our results demonstrate that [20,20,20(-2)H3]LTE4 is a suitable internal standard for the GC-MS determination of urinary LTE4.
Collapse
Affiliation(s)
- D Tsikas
- Institute of Clinical Pharmacology, Hannover Medical School, Germany
| | | | | | | | | | | |
Collapse
|
43
|
Reinke M, Hoppe U, Röder T, Bestmann HJ, Mollenhauer J, Brune K. A monoclonal antibody against the sulfidopeptide leukotrienes LTC4, LTD4 and LTE4. Biochim Biophys Acta 1991; 1081:274-8. [PMID: 1847833 DOI: 10.1016/0005-2760(91)90282-m] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
A monoclonal antibody (1A-LDR1) against sulfidopeptide leukotrienes (LT) is described. The mAb shows a nearly identical detection limit of about 0.04 ng for LTC4, LTD4, LTE4 and NacLTE4 in standard fluid phase RIA. Steric modifications, however, diminish the sensitivity, as determined for the examples 5-epi-LTC4, 6-epi-LTC4, 5,6-epi-LTC4 and 11-trans-LTC4. No crossreactivity could be observed for LTB4. Crossreactions with components of the LT peptide chain such as L-cysteine or glutathione, as well as with arachidonic acid, were not detectable. In assessing the accuracy of the LT-RIA, recovery experiments with supernatants of mouse peritoneal macrophages and incubates of gastric mucosa showed a good correlation of r = 0.993 and 0.990, respectively. Results of an inhibition experiment with mouse peritoneal macrophages, incubated with several concentrations of indomethacin and nordihydroguaiaretic acid (NDGA), support the reliability of RIA and ELISA. The new LT-mAB allows an almost complete detection of peptide leukotrienes in one assay.
Collapse
Affiliation(s)
- M Reinke
- Department of Pharmacology, University of Erlangen-Nürnberg, F.R.G
| | | | | | | | | | | |
Collapse
|