Quinn, Gerry A., Maloy, Aaron P., McClean, Stephen, Carney, Brian and Slater, John W. (2012) Lipopeptide Biosurfactants from Paenibacillus polymyxa Inhibit Single and Mixed Species Biofilms. Biofouling, 28 (10). pp. 1151-1166. [Journal article]
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Although biofilms are recognised as important in microbial colonisation, solutions to theirinhibition are predominantly based on planktonic assays. These solutions have limited efficacy against biofilms. Here, a series of biofilm-orientated tests were used to identify antibiofilm compounds from marine micro-flora. This led to the isolation of a complex of antibiofilm compounds from a Paenibacillus polymyxa extract (PPE). A combination of rpHPLC and mass spectrometry identified the principle components of PPE as fusaricidin B (LI-FO4b) and polymyxin D1 with minor contributions from surfactins. This complex (PPE) reduced the biofilm biomass of Bacillus subtilis, Micrococcus luteus, Pseudomonas aeruginosa, Staphylococcus aureus and Streptococcus bovis. In contrast, ampicillin was only effective against S. aureus. PPE also inhibited a self-assembling marine biofilm (SAMB) in co-incubation assays by 99.3% ±1.9 and disrupted established SAMB by 72.4% ± 4.4, while ampicillin showed no significant reduction. The effectiveness of this complex of lipopeptides against single and multispecies biofilms suggests a future role in biofilm prevention strategies.
|Item Type:||Journal article|
|Faculties and Schools:||Faculty of Life and Health Sciences|
Faculty of Life and Health Sciences > School of Biomedical Sciences
|Research Institutes and Groups:||Biomedical Sciences Research Institute|
Biomedical Sciences Research Institute > Diabetes
|Deposited By:||Dr Stephen McClean|
|Deposited On:||01 Oct 2012 11:32|
|Last Modified:||22 Jun 2015 12:37|
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