Graphene-based and surface-enhanced raman spectroscopy for monitoring the physio-chemical response of thermophilic bacterial spores to low temperatures exposure
Monitoring the spore life cycle is one of the main issues in several fields including environmental control, sustainable ecosystems, food security, and healthcare systems. In this framework, the study of the living organism resistance to extreme conditions like those mimicking space environments is...
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Online Access: | http://hdl.handle.net/11591/434477 https://doi.org/10.3390/s20154150 |
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ftuncampaniairis:oai:iris.unicampania.it:11591/434477 2024-04-14T08:03:05+00:00 Graphene-based and surface-enhanced raman spectroscopy for monitoring the physio-chemical response of thermophilic bacterial spores to low temperatures exposure Camerlingo C. Di Meo G. Lepore M. Lisitskiy M. Poli A. Portaccio M. Romano I. Di Donato P. Camerlingo, C. Di Meo, G. Lepore, M. Lisitskiy, M. Poli, A. Portaccio, M. Romano, I. Di Donato, P. 2020 http://hdl.handle.net/11591/434477 https://doi.org/10.3390/s20154150 eng eng info:eu-repo/semantics/altIdentifier/pmid/32722541 info:eu-repo/semantics/altIdentifier/wos/WOS:000559104400001 volume:20 issue:15 firstpage:1 lastpage:10 numberofpages:10 journal:SENSORS http://hdl.handle.net/11591/434477 doi:10.3390/s20154150 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85088676345 Graphene-based pH-meter SERS Spore germination Thermophilic bacteria info:eu-repo/semantics/article 2020 ftuncampaniairis https://doi.org/10.3390/s20154150 2024-03-21T16:18:53Z Monitoring the spore life cycle is one of the main issues in several fields including environmental control, sustainable ecosystems, food security, and healthcare systems. In this framework, the study of the living organism resistance to extreme conditions like those mimicking space environments is particularly interesting. The assessment of the local change of the pH level can be extremely useful for this purpose. An optical physiometer method based on the Raman response of the graphene, which is able to locally sense pH of a fluid on a micrometric scale, has been recently proposed. Due to the presence of π-bonds at the surface, the electronic doping of graphene is determined by the external conditions and can be electrochemically controlled or altered by the contact with an acid or alkaline fluid. The doping level affects the vibrational energies of the graphene that can be monitored by conventional Raman spectroscopy. In addition, Surface-Enhanced Raman Spectroscopy (SERS) can give direct information on the biochemical changes occurring in spore components. In this work, we propose the joint use of Graphene-Based Raman Spectroscopy (GbRS) and SERS for the monitoring of the response of spores to exposure to low temperatures down to 100 K. The spores of the thermophilic bacterium Parageobacillus thermantarcticus isolated from an active volcano of Antarctica (Mt. Melbourne) were investigated. These spores are particularly resistant to several stressing stimuli and able to adapt to extreme conditions like low temperatures, UV irradiation, and γ-rays exposure. The results obtained showed that the joint use of GbRS and SERS represents a valuable tool for monitoring the physio-chemical response of bacterial spores upon exposure to stressing stimuli. Article in Journal/Newspaper Antarc* Antarctica Università degli Studi della Campania "Luigi Vanvitelli": CINECA IRIS V: Sensors 20 15 4150 |
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Open Polar |
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Università degli Studi della Campania "Luigi Vanvitelli": CINECA IRIS V: |
op_collection_id |
ftuncampaniairis |
language |
English |
topic |
Graphene-based pH-meter SERS Spore germination Thermophilic bacteria |
spellingShingle |
Graphene-based pH-meter SERS Spore germination Thermophilic bacteria Camerlingo C. Di Meo G. Lepore M. Lisitskiy M. Poli A. Portaccio M. Romano I. Di Donato P. Graphene-based and surface-enhanced raman spectroscopy for monitoring the physio-chemical response of thermophilic bacterial spores to low temperatures exposure |
topic_facet |
Graphene-based pH-meter SERS Spore germination Thermophilic bacteria |
description |
Monitoring the spore life cycle is one of the main issues in several fields including environmental control, sustainable ecosystems, food security, and healthcare systems. In this framework, the study of the living organism resistance to extreme conditions like those mimicking space environments is particularly interesting. The assessment of the local change of the pH level can be extremely useful for this purpose. An optical physiometer method based on the Raman response of the graphene, which is able to locally sense pH of a fluid on a micrometric scale, has been recently proposed. Due to the presence of π-bonds at the surface, the electronic doping of graphene is determined by the external conditions and can be electrochemically controlled or altered by the contact with an acid or alkaline fluid. The doping level affects the vibrational energies of the graphene that can be monitored by conventional Raman spectroscopy. In addition, Surface-Enhanced Raman Spectroscopy (SERS) can give direct information on the biochemical changes occurring in spore components. In this work, we propose the joint use of Graphene-Based Raman Spectroscopy (GbRS) and SERS for the monitoring of the response of spores to exposure to low temperatures down to 100 K. The spores of the thermophilic bacterium Parageobacillus thermantarcticus isolated from an active volcano of Antarctica (Mt. Melbourne) were investigated. These spores are particularly resistant to several stressing stimuli and able to adapt to extreme conditions like low temperatures, UV irradiation, and γ-rays exposure. The results obtained showed that the joint use of GbRS and SERS represents a valuable tool for monitoring the physio-chemical response of bacterial spores upon exposure to stressing stimuli. |
author2 |
Camerlingo, C. Di Meo, G. Lepore, M. Lisitskiy, M. Poli, A. Portaccio, M. Romano, I. Di Donato, P. |
format |
Article in Journal/Newspaper |
author |
Camerlingo C. Di Meo G. Lepore M. Lisitskiy M. Poli A. Portaccio M. Romano I. Di Donato P. |
author_facet |
Camerlingo C. Di Meo G. Lepore M. Lisitskiy M. Poli A. Portaccio M. Romano I. Di Donato P. |
author_sort |
Camerlingo C. |
title |
Graphene-based and surface-enhanced raman spectroscopy for monitoring the physio-chemical response of thermophilic bacterial spores to low temperatures exposure |
title_short |
Graphene-based and surface-enhanced raman spectroscopy for monitoring the physio-chemical response of thermophilic bacterial spores to low temperatures exposure |
title_full |
Graphene-based and surface-enhanced raman spectroscopy for monitoring the physio-chemical response of thermophilic bacterial spores to low temperatures exposure |
title_fullStr |
Graphene-based and surface-enhanced raman spectroscopy for monitoring the physio-chemical response of thermophilic bacterial spores to low temperatures exposure |
title_full_unstemmed |
Graphene-based and surface-enhanced raman spectroscopy for monitoring the physio-chemical response of thermophilic bacterial spores to low temperatures exposure |
title_sort |
graphene-based and surface-enhanced raman spectroscopy for monitoring the physio-chemical response of thermophilic bacterial spores to low temperatures exposure |
publishDate |
2020 |
url |
http://hdl.handle.net/11591/434477 https://doi.org/10.3390/s20154150 |
genre |
Antarc* Antarctica |
genre_facet |
Antarc* Antarctica |
op_relation |
info:eu-repo/semantics/altIdentifier/pmid/32722541 info:eu-repo/semantics/altIdentifier/wos/WOS:000559104400001 volume:20 issue:15 firstpage:1 lastpage:10 numberofpages:10 journal:SENSORS http://hdl.handle.net/11591/434477 doi:10.3390/s20154150 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85088676345 |
op_doi |
https://doi.org/10.3390/s20154150 |
container_title |
Sensors |
container_volume |
20 |
container_issue |
15 |
container_start_page |
4150 |
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1796298274244657152 |