title: Microbial composition of biofilms in a brewery investigated by fatty acid analysis, fluorescence in situ hybridisation and isolation techniques.
abstract: Biofilms associated with brewery plants can harbour spoiling microorganisms that potentially damage the final product. Most beer-spoiling microorganisms are thought to depend on numerous interactions with the accompanying microbiota. However, there is no information on the microbial community structure of biofilms from bottling plants. The conveyors that transport the bottles to and from the plant are known as potential sources of microbial contamination of beer. Consequently, the material buildup from two conveyors was analysed using a cultivation/isolation approach, and the culture-independent techniques of whole cell fatty acid analysis and fluorescence in situ hybridisation (FISH). Heterogeneous communities were present at both conveyors. Although characteristic fatty acids for Eukarya were present, FISH-signals for Eukarya were extremely low. The Proteobacteria, in particular the Gammaproteobacteria, were abundant at both sample sites. Bacterial isolates were obtained for every dominating group detected by FISH: the Alphaproteobacteria, Betaproteobacteria and Gammaproteobacteria, the Xanthomonadaceae, the Actinobacteria, the Bacteroidetes and the Firmicutes.
authors.affiliation: Abteilung Mikrobiologie, Fachbereich Biologie/Chemie, Universität Osnabrück, 49069 Osnabrück, Germany.
authors.forename: Markus
authors.initials: M
authors.lastname: Timke
authors.forename: Dorothee
authors.initials: D
authors.lastname: Wolking
authors.forename: Ngoc Quynh
authors.initials: NQ
authors.lastname: Wang-Lieu
authors.forename: Karlheinz
authors.initials: K
authors.lastname: Altendorf
authors.forename: André
authors.initials: A
authors.lastname: Lipski
mesh_terms: D001419:Bacteria / Q000145:classification* / Q000254:growth & development / Q000378:metabolism; D001515:Beer / Q000382:microbiology*; D044822:Biodiversity; D018441:Biofilms; D005227:Fatty Acids / Q000032:analysis* / Q000378:metabolism; D017404:In Situ Hybridization, Fluorescence; D007220:Industrial Waste
chemical_list: D005227:Fatty Acids; D007220:Industrial Waste