Journal
PLASMA PROCESSES AND POLYMERS
Volume 13, Issue 11, Pages 1080-1088Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/ppap.201600051
Keywords
bacterial spores; biodegradable materials; cold plasma; sterilization; surface modification
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Effect of low temperature plasma treatment on mortality of several microorganisms, Penicillium chrysogenum, Cladosporium cladosporioides, Aspergillus fumigatus, Fusarium culmorum, Escherichia coli, and Staphylococcus aureus, deposited on polylactide (PLA) surface, was investigated. After the PLA surface was modified, fungal spores were counted and the degree of bacterial reduction was determined. Images of specimens' surface, reflecting the effect of the low temperature plasma on particular microorganisms, were obtained by using a digital camera, polarizing microscope, epi-fluorescence microscope, and scanning electron microscope. The low temperature plasma causes mortality of microorganisms as a result of cell membrane cracking.
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