Dilger, Thorsten and Melzl, Holger and Gessner, Andre (2016) Rapid and reliable identification of waterborne Legionella species by MALDI-TOF mass spectrometry. JOURNAL OF MICROBIOLOGICAL METHODS, 127. pp. 154-159. ISSN 0167-7012, 1872-8359
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Detection and enumeration of Legionella bacteria in drinking water is regulated in Germany by ISO 11731-2. The mandatory method for species identification employs parallel subculturing of suspicious colonies on selective media requiring the handling of a large number of cultivation plates. After changes to the drinking water quality regulation in Germany in 2012 the demand for Legionella contamination testing increased drastically. A more reliable, faster and less laborious method for species identification is therefore desirable. Matrix-assisted laser desorption ionization followed by time of flight detection mass spectrometry (MALDI-TOF MS) promises an accelerated identification of bacteria with high reliability and reduced expenditure. Our study shows that MS based species identification results are in full concordance with cultural and biochemical detection and differentiation and that valuable additional information can be gained, even though the ISO regulation demands an extended incubation period for primary bacterial cultures that is actually in contrast to the prerequisites of the MALDI Biotyper system. In addition, the established identification algorithm is very economical and improves time-to-result. Based on our findings, the amendment of MALID-TOF MS identification to ISO11731-2 as an alternative identification method should be taken into consideration. (C) 2016 Elsevier B.V. All rights reserved.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | LASER-DESORPTION IONIZATION; CLINICAL MICROBIOLOGY; TIME; DIFFERENTIATION; PNEUMOPHILA; GROWTH; Legionella; Drinking water; ISO 11731; MALDI-TOF MS; Biotyper |
| Subjects: | 500 Science > 570 Life sciences |
| Divisions: | Biology, Preclinical Medicine > Institut für Biochemie, Genetik und Mikrobiologie |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 03 Apr 2019 10:37 |
| Last Modified: | 03 Apr 2019 10:37 |
| URI: | https://pred.uni-regensburg.de/id/eprint/3579 |
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