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Physico-chemical characterization of single bacteria and spores using optical tweezers
Umeå University, Faculty of Science and Technology, Department of Physics.ORCID iD: 0000-0002-1303-0327
Department of Paraclinical Sciences, Faculty of Veterinary Medicine, Norwegian University of Life Sciences, Norway.ORCID iD: 0000-0001-5373-0590
Umeå University, Faculty of Science and Technology, Department of Physics.ORCID iD: 0000-0002-0496-6692
Umeå University, Faculty of Science and Technology, Department of Physics.ORCID iD: 0000-0002-0168-0197
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2023 (English)In: Research in Microbiology, ISSN 0923-2508, E-ISSN 1769-7123, Vol. 174, no 6, article id 104060Article in journal (Refereed) Published
Abstract [en]

Spore-forming pathogenic bacteria are adapted for adhering to surfaces, and their endospores can tolerate strong chemicals making decontamination difficult. Understanding the physico-chemical properties of bacteria and spores is therefore essential in developing antiadhesive surfaces and disinfection techniques. However, measuring physico-chemical properties in bulk does not show the heterogeneity between cells. Characterizing bacteria on a single-cell level can thereby provide mechanistic clues usually hidden in bulk measurements. This paper shows how optical tweezers can be applied to characterize single bacteria and spores, and how physico-chemical properties related to adhesion, fluid dynamics, biochemistry, and metabolic activity can be assessed.

Place, publisher, year, edition, pages
Elsevier, 2023. Vol. 174, no 6, article id 104060
Keywords [en]
endospores, Raman spectroscopy, metabolic activity, adhesion, pili, CaDPA
National Category
Biophysics Atom and Molecular Physics and Optics
Identifiers
URN: urn:nbn:se:umu:diva-208300DOI: 10.1016/j.resmic.2023.104060PubMedID: 37068697Scopus ID: 2-s2.0-85166663908OAI: oai:DiVA.org:umu-208300DiVA, id: diva2:1757637
Available from: 2023-05-17 Created: 2023-05-17 Last updated: 2023-08-16Bibliographically approved

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Nilsson, Daniel P.G.Malyshev, DmitryÖberg, RasmusWiklund, KristerAndersson, Magnus

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Nilsson, Daniel P.G.Jonsmoen, Unni LiseMalyshev, DmitryÖberg, RasmusWiklund, KristerAndersson, Magnus
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Department of PhysicsUmeå Centre for Microbial Research (UCMR)
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Research in Microbiology
BiophysicsAtom and Molecular Physics and Optics

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