Antibacterial effects of wood structural components and extractives from pinus sylvestris and picea abies on methicillin-resistant Staphylococcus aureus and Escherichia coli O157
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Journal Title
Journal ISSN
Volume Title
A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
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Date
2017-11-01
Major/Subject
Mcode
Degree programme
Language
en
Pages
14
7601-7614
7601-7614
Series
BioResources, Volume 12, issue 4
Abstract
Antibacterial properties of wood structural components and extractives were investigated against methicillin-resistant Staphylococcus aureus (MRSA) and Escherichia coli O157:H7 by placing bacterial inoculum on the model surfaces and incubating them for 2, 4, and 24 h. After incubation, the amount of viable bacteria on the surfaces was studied. The film coverage and thickness were evaluated with atomic-force microscopy (AFM) and X-ray photoelectron spectroscopy (XPS). The extracts were analyzed with gas chromatography-mass spectrometry (GC-MS). The results showed that films fully covered the glass surfaces. The XPS results confirmed the analysis of GC-MS, which revealed more similarities between the extractives of pine heartwood and spruce heartwood than between pine heartwood and pine sapwood. Only the pine heartwood extract showed an antibacterial effect against E. coli O157:H7. In contrast, MRSA was susceptible to all of the extracts and milled wood lignin (MWL).Description
Keywords
Antibacterial wood, E. coli, Extractives, MRSA, Norway spruce, Scots pine, Wood structural components
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Citation
Vainio-Kaila, T, Zhang, X, Hänninen, T, Kyyhkynen, A, Johansson, L S, Willför, S, Österberg, M, Siitonen, A & Rautkari, L 2017, ' Antibacterial effects of wood structural components and extractives from pinus sylvestris and picea abies on methicillin-resistant Staphylococcus aureus and Escherichia coli O157 ', BioResources, vol. 12, no. 4, pp. 7601-7614 . https://doi.org/10.15376/biores.12.4.7601-7614
