Shimizu, Satoshi und Barczyk, Simon und Rettberg, Petra und Shimizu, Tetsuji und Klaempfl, Tobias und Zimmermann, Julia L. und Hoeschen, Till und Linsmeier, Christian und Weber, Peter und Morfill, Gregor E. und Thomas, Hubertus M. (2013) Cold atmospheric plasma – A new technology for spacecraft component decontamination. Planetary and Space Science. Elsevier. doi: 10.1016/j.pss.2013.10.008. ISSN 0032-0633.
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Kurzfassung
Cold atmospheric plasma (CAP) based on the Surface Micro-Discharge (SMD) technology was investigated for inactivation of different bacteria and endospores. The used technique was developed to serve as an alternative method for the decontamination of spacecraft components based on the COSPAR planetary protection policy where currently the dry heat microbial reduction method is the only applicable way to satisfy the required demands. However it is known, that dry heat can thermally damage sophisticated components installed on the device. Therefore, the development of a low temperature sterilization system is one of the high priority issues for upcoming space missions in the extraterrestrial field. In the study presented here, the vegetative bacteria Escherichia coli and Deinococcus radiodurans and several types of bacterial endospores – including Bacillus atrophaeus, Bacillus safensis, Bacillus megaterium, Bacillus megaterium 2c1 and Bacillus thuringiensis E24 – were inactivated by exposing them indirectly i.e. only to the reactive gases produced by the SMD electrode at room temperature. The results showed a 5 log inactivation for E. coli after 10 min of exposure. In contrast D. radiodurans proved to be more resistant resulting in a reduction of 3 log after exposure of 30 min. More than 6 log reductions were achieved for B. safensis, B. megaterium and B. megaterium 2c1 after 90 min of exposure. Furthermore the applicability of the used CAP system for spacecraft decontamination according to the planetary protection policy was investigated. This included also the investigation of the inactivation homogeneity by the plasma gas, the control of the temperature at the area of interest, the measurement of the O₃density in the treatment region and the detailed investigation of the effects of the exposure on different materials.
elib-URL des Eintrags: | https://elib.dlr.de/86911/ | ||||||||||||||||||||||||||||||||||||||||||||||||
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Dokumentart: | Zeitschriftenbeitrag | ||||||||||||||||||||||||||||||||||||||||||||||||
Titel: | Cold atmospheric plasma – A new technology for spacecraft component decontamination | ||||||||||||||||||||||||||||||||||||||||||||||||
Autoren: |
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Datum: | 2013 | ||||||||||||||||||||||||||||||||||||||||||||||||
Erschienen in: | Planetary and Space Science | ||||||||||||||||||||||||||||||||||||||||||||||||
Referierte Publikation: | Ja | ||||||||||||||||||||||||||||||||||||||||||||||||
Open Access: | Nein | ||||||||||||||||||||||||||||||||||||||||||||||||
Gold Open Access: | Nein | ||||||||||||||||||||||||||||||||||||||||||||||||
In SCOPUS: | Ja | ||||||||||||||||||||||||||||||||||||||||||||||||
In ISI Web of Science: | Ja | ||||||||||||||||||||||||||||||||||||||||||||||||
DOI: | 10.1016/j.pss.2013.10.008 | ||||||||||||||||||||||||||||||||||||||||||||||||
Verlag: | Elsevier | ||||||||||||||||||||||||||||||||||||||||||||||||
Name der Reihe: | Epub ahead of print (in Press) | ||||||||||||||||||||||||||||||||||||||||||||||||
ISSN: | 0032-0633 | ||||||||||||||||||||||||||||||||||||||||||||||||
Status: | veröffentlicht | ||||||||||||||||||||||||||||||||||||||||||||||||
Stichwörter: | cold atmospheric plasma, surface micro discharge, planetary protection, endospores, decontamination | ||||||||||||||||||||||||||||||||||||||||||||||||
HGF - Forschungsbereich: | Luftfahrt, Raumfahrt und Verkehr | ||||||||||||||||||||||||||||||||||||||||||||||||
HGF - Programm: | Raumfahrt | ||||||||||||||||||||||||||||||||||||||||||||||||
HGF - Programmthema: | Forschung unter Weltraumbedingungen | ||||||||||||||||||||||||||||||||||||||||||||||||
DLR - Schwerpunkt: | Raumfahrt | ||||||||||||||||||||||||||||||||||||||||||||||||
DLR - Forschungsgebiet: | R FR - Forschung unter Weltraumbedingungen | ||||||||||||||||||||||||||||||||||||||||||||||||
DLR - Teilgebiet (Projekt, Vorhaben): | R - Vorhaben Strahlenbiologie (alt) | ||||||||||||||||||||||||||||||||||||||||||||||||
Standort: | Bonn-Oberkassel , Köln-Porz | ||||||||||||||||||||||||||||||||||||||||||||||||
Institute & Einrichtungen: | Institut für Luft- und Raumfahrtmedizin > Strahlenbiologie Vorstandsbereich Raumfahrtmanagement | ||||||||||||||||||||||||||||||||||||||||||||||||
Hinterlegt von: | Kopp, Kerstin | ||||||||||||||||||||||||||||||||||||||||||||||||
Hinterlegt am: | 18 Dez 2013 11:36 | ||||||||||||||||||||||||||||||||||||||||||||||||
Letzte Änderung: | 18 Dez 2013 11:36 |
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