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Optical multi-channel interrogation instrument for bacterial colony characterization
A single instrument that includes multiple optical channels was developed to simultaneously measure various optical and associated biophysical characteristics of a bacterial colony. The multi-channel device can provide five distinct optical features without the need to transfer the sample to multipl...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Public Library of Science
2021
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7906345/ https://www.ncbi.nlm.nih.gov/pubmed/33630969 http://dx.doi.org/10.1371/journal.pone.0247721 |
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author | Doh, Iyll-Joon Kim, Huisung Sturgis, Jennifer Rajwa, Bartek Robinson, J. Paul Bae, Euiwon |
author_facet | Doh, Iyll-Joon Kim, Huisung Sturgis, Jennifer Rajwa, Bartek Robinson, J. Paul Bae, Euiwon |
author_sort | Doh, Iyll-Joon |
collection | PubMed |
description | A single instrument that includes multiple optical channels was developed to simultaneously measure various optical and associated biophysical characteristics of a bacterial colony. The multi-channel device can provide five distinct optical features without the need to transfer the sample to multiple locations or instruments. The available measurement channels are bright-field light microscopy, 3-D colony-morphology map, 2-D spatial optical-density distribution, spectral forward-scattering pattern, and spectral optical density. The series of multiple morphological interrogations is beneficial in understanding the bio-optical features of a bacterial colony and the correlations among them, resulting in an enhanced power of phenotypic bacterial discrimination. To enable a one-shot interrogation, a confocal laser scanning module was built as an add-on to an upright microscope. Three different-wavelength diode lasers were used for the spectral analysis, and high-speed pin photodiodes and CMOS sensors were utilized as detectors to measure the spectral OD and light-scatter pattern. The proposed instrument and algorithms were evaluated with four bacterial genera, Escherichia coli, Listeria innocua, Salmonella Typhimurium, and Staphylococcus aureus; their resulting data provided a more complete picture of the optical characterization of bacterial colonies. |
format | Online Article Text |
id | pubmed-7906345 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | Public Library of Science |
record_format | MEDLINE/PubMed |
spelling | pubmed-79063452021-03-03 Optical multi-channel interrogation instrument for bacterial colony characterization Doh, Iyll-Joon Kim, Huisung Sturgis, Jennifer Rajwa, Bartek Robinson, J. Paul Bae, Euiwon PLoS One Research Article A single instrument that includes multiple optical channels was developed to simultaneously measure various optical and associated biophysical characteristics of a bacterial colony. The multi-channel device can provide five distinct optical features without the need to transfer the sample to multiple locations or instruments. The available measurement channels are bright-field light microscopy, 3-D colony-morphology map, 2-D spatial optical-density distribution, spectral forward-scattering pattern, and spectral optical density. The series of multiple morphological interrogations is beneficial in understanding the bio-optical features of a bacterial colony and the correlations among them, resulting in an enhanced power of phenotypic bacterial discrimination. To enable a one-shot interrogation, a confocal laser scanning module was built as an add-on to an upright microscope. Three different-wavelength diode lasers were used for the spectral analysis, and high-speed pin photodiodes and CMOS sensors were utilized as detectors to measure the spectral OD and light-scatter pattern. The proposed instrument and algorithms were evaluated with four bacterial genera, Escherichia coli, Listeria innocua, Salmonella Typhimurium, and Staphylococcus aureus; their resulting data provided a more complete picture of the optical characterization of bacterial colonies. Public Library of Science 2021-02-25 /pmc/articles/PMC7906345/ /pubmed/33630969 http://dx.doi.org/10.1371/journal.pone.0247721 Text en © 2021 Doh et al http://creativecommons.org/licenses/by/4.0/ This is an open access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. |
spellingShingle | Research Article Doh, Iyll-Joon Kim, Huisung Sturgis, Jennifer Rajwa, Bartek Robinson, J. Paul Bae, Euiwon Optical multi-channel interrogation instrument for bacterial colony characterization |
title | Optical multi-channel interrogation instrument for bacterial colony characterization |
title_full | Optical multi-channel interrogation instrument for bacterial colony characterization |
title_fullStr | Optical multi-channel interrogation instrument for bacterial colony characterization |
title_full_unstemmed | Optical multi-channel interrogation instrument for bacterial colony characterization |
title_short | Optical multi-channel interrogation instrument for bacterial colony characterization |
title_sort | optical multi-channel interrogation instrument for bacterial colony characterization |
topic | Research Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7906345/ https://www.ncbi.nlm.nih.gov/pubmed/33630969 http://dx.doi.org/10.1371/journal.pone.0247721 |
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