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Characterization of plasma treated surfaces for food safety by terahertz spectroscopy

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dc.title Characterization of plasma treated surfaces for food safety by terahertz spectroscopy en
dc.contributor.author Sulovská, Kateřina
dc.contributor.author Lehocký, Marián
dc.relation.ispartof Millimetre Wave and Terahertz Sensors and Technology VII
dc.identifier.issn 0277-786X Scopus Sources, Sherpa/RoMEO, JCR
dc.identifier.isbn 978-1-62841-315-1
dc.date.issued 2014
utb.relation.volume 9252
dc.event.title Conference on Millimetre Wave and Terahertz Sensors and Technology VII
dc.event.location Amsterdam
utb.event.state-en Netherlands
utb.event.state-cs Nizozemsko
dc.event.sdate 2014-09-24
dc.event.edate 2014-09-25
dc.type conferenceObject
dc.language.iso en
dc.publisher International Society for Optical Engineering (SPIE)
dc.identifier.doi 10.1117/12.2067162
dc.subject antibacterial surface en
dc.subject terahertz time-domain spectroscopy en
dc.subject pulsed terahertz ATR spectroscopy en
dc.subject refractive index en
dc.subject absorbance en
dc.description.abstract A physico-chemical approach to modify surfaces not only for use in medicine, but also for preservation of food is nowadays widely studied to lower the risks of increased number of bacterial pathogens that are in a direct contact with people. Food safety is very important part of preserving sustainability during crises, especially after the enterohaemorrhagic Escherichia coli outbreak in Europe in 2011. One of the possibility how we can protect food against various pathogens is the modification of packing materials that are directly in contact with preserved food. This contribution deals with the characterization of modified surfaces with antibacterial properties via Terahertz spectroscopy. For the purpose of this paper, three monomers were used for grafting onto air radiofrequency plasma activated low density polyethylene surface, which created a brush-like structure. Next, the antibacterial agents, Irgasan and Chlorhexidine, were anchored to these surfaces. These antibacterial agents were selected for supposed effect on two most frequently occurring bacterial strains -Escherichia coli and Staphylococcus aureus. Materials were further tested for the presence of antibacterial agent molecules, in our case by means of terahertz spectroscopy. Each material was tested on two spectroscopes - the SPECTRA and the OSCAT terahertz instruments. en
utb.faculty Faculty of Applied Informatics
dc.identifier.uri http://hdl.handle.net/10563/1004128
utb.identifier.obdid 43871698
utb.identifier.scopus 2-s2.0-84922746406
utb.identifier.wok 000345030100006
utb.source d-wok
dc.date.accessioned 2015-01-29T11:35:09Z
dc.date.available 2015-01-29T11:35:09Z
dc.rights.access openAccess
utb.contributor.internalauthor Sulovská, Kateřina
utb.contributor.internalauthor Lehocký, Marián
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