title: Analysis of hopanoids in bacteria involved in food technology and food contamination.
abstract: Hopanoids are pentacyclic triterpenoids which are believed to act as reinforcers of membranes in certain prokaryotic microorganisms. A rapid and sensitive method for their screening in bacteria was elaborated, involving extraction of nonsaponifiable lipids and the analysis by gas chromatography-mass spectrometry, selectively monitoring the ion of m/z = 191. Using the method, hopanoids were detected in strains of Acetobacter pasteurianus, but were found to be absent in lactic acid bacteria (Lactobacillus spp., Lactococcus spp.) and in food-contaminating bacteria (Salmonella spp., Listeria spp., Yersinia spp. and others).
authors.affiliation: Department of Microbiology and Chemistry, Food Research Institute, Bratislava, Slovakia. holcikov@mbox.bts.sk
authors.forename: T
authors.initials: T
authors.lastname: Kuchta
authors.forename: R
authors.initials: R
authors.lastname: Kubinec
authors.forename: P
authors.initials: P
authors.lastname: Farkas
mesh_terms: D001419:Bacteria / Q000737:chemistry*; D005516:Food Microbiology; D014315:Triterpenes / Q000032:analysis*
chemical_list: D014315:Triterpenes