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Micro simulated moving bed chromatography-mass spectrometry as a continuous on-line process analytical tool
Abstract
Continuous manufacturing is becoming increasingly important in the (bio-)pharmaceutical industry, as more product can be produced in less time and at lower costs. In this context, there is a need for powerful continuous analytical tools. Many established off-line analytical methods, such as mass spectrometry (MS), are hardly considered for process analytical technology (PAT) applications in biopharmaceutical processes, as they are limited to at-line analysis due to the required sample preparation and the associated complexity, although they would provide a suitable technique for the assessment of a wide range of quality attributes. In this study, we investigated the applicability of a recently developed micro simulated moving bed chromatography system (µSMB) for continuous on-line sample preparation for MS. As a test case, we demonstrate the continuous on-line MS measurement of a protein solution (myoglobin) containing Tris buffer, which interferes with ESI-MS measurements, by continuously exchanging this buffer with a volatile ammonium acetate buffer suitable for MS measurements. The integration of the µSMB significantly increases MS sensitivity by removing over 98% of the buffer substances. Thus, this study demonstrates the feasibility of on-line µSMB-MS, providing a versatile PAT tool by combining the detection power of MS for various product attributes with all the advantages of continuous on-line analytics. Graphical abstract
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“A solution to this limitation was explored by Diehm et al., in 2024, by hyphenating a micro‐simulated moving bed chromatography (µSMB) for sample preparation and using MS for measurements. This was implemented in an on‐line setup within the PAT.”
From Current PAT Landscape in the Downstream Processing of Biopharmaceuticals (2025) · cites this paper as [88]
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Sorted by citations
Current PAT Landscape in the Downstream Processing of Biopharmaceuticals
Sathiyapriyan, P., Mukherjee, S., Vogel, T., Essen, L., Boerema, D., Vey, M., & Kalina, U. (2025) · Analytical Science Advances · doi:10.1002/ansa.70013 · Cited by 45
Metadata
- Authors
- Diehm, J., Witting, L., Kirschhöfer, F., Brenner-Weiß, G., & Franzreb, M.
- Venue
- Analytical and Bioanalytical Chemistry
- Published
- 2023-11-10
- Volume
- 416
- Issue
- 2
- Pages
- 373-386
- ISSN
- 1618-2642
- 1618-2650
- PMC
- PMC10761468
- Cited by
- 2
- References
- 1
- Language
- en
- Funders
- Stiftung Begabtenförderung Cusanuswerk
- Karlsruher Institut für Technologie (KIT)
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