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dc.contributor.authorO'Callahan, Diahanna Rachelle
dc.contributor.authorSingh, Tejinder
dc.contributor.authorMcDonald, Ian R.
dc.identifier.citationO’Callahan, D. R., Singh, T., & McDonald, I. R. (2012). Evaluation of lactic acid bacterium from chilli waste as a potential antifungal agent for wood products. Journal of Applied Microbiology, 112(3), 436-442.en_NZ
dc.description.abstractAims:  The aim of this study was to isolate lactic acid bacteria from chilli waste and evaluate metabolites produced for the ability to arrest wood decay. Methods and Results:  Using an optical density screening method, one bacterium (isolate C11) was identified as having pronounced antifungal properties against Oligoporus placenta. This isolate was identified as Lactobacillus brevis by 16S rRNA gene sequencing. To determine antifungal activity in wood, Pinus radiata blocks were impregnated with Lact. brevis [C11] cell-free supernatant and exposed to brown rot fungi O. placenta, Antrodia xantha and Coniophora puteana. The treated timber demonstrated resistance to degradation from all fungi. The antifungal metabolites were heat stable and not affected by proteinase K, but were affected by neutralization with NaOH suggesting the metabolites were of an acidic nature. The presence of lactic and acetic acid was confirmed by HPLC analysis. Conclusions: Lactobacillus brevis [C11] produced acidic metabolites that were able to inhibit the growth of wood decay fungi and subsequent wood decay. Significance and Impact of the Study:  Traditional wood treatments are becoming an environmental issue as the public demands more benign options. The use of lactic acid bacteria which are considered safe for general use is a potential alternative to the conventional heavy metal chemicals currently in use.en_NZ
dc.relation.ispartofJournal of Applied Microbiology
dc.subject16S rRNA gene sequencingen_NZ
dc.subjectAntrodia xanthaen_NZ
dc.subjectConiophora puteanaen_NZ
dc.subjectfungal biodegradationen_NZ
dc.subjectlactic acid bacteriaen_NZ
dc.subjectLactobacillus brevisen_NZ
dc.subjectOligoporus placentaen_NZ
dc.subjectPinus radiataen_NZ
dc.titleEvaluation of lactic acid bacterium from chilli waste as a potential antifungal agent for wood productsen_NZ
dc.typeJournal Articleen_NZ
dc.relation.isPartOfJournal of Applied Microbiologyen_NZ

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