Analysis of hopanoids in bacteria involved in food technology and food contamination |
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Authors: | Tomá Kuchta Róbert Kubinec Pavel Farka |
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Institution: | Department of Microbiology and Chemistry, Food Research Institute, Priemyselná4, SK-82006 Bratislava, Slovakia;Institute of Chemistry, Comenius University, Faculty of Natural Sciences, Mlynskádolina Ch-2, SK-84215 Bratislava, Slovakia |
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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 non-saponifiable 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). |
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Keywords: | Hopanoid triterpene Acetobacter pasteurianus Lactic acid bacterium Pathogenic bacterium |
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