|
|||||
|
|
Application of matrix‐assisted laser desorption/ionization time‐of‐flight mass spectrometry as a monitoring tool for in‐house brewer's yeast contamination: a proof of concept |
|
| Authors: | Anneleen D. Wieme Freek Spitaels Peter Vandamme Anita Van Landschoot |
| Affiliation: | 1. Laboratory of Biochemistry and Brewing, Faculty of Bioscience Engineering, Ghent University, , B‐9000 Ghent, Belgium;2. Laboratory of Microbiology, Faculty of Sciences, Ghent University, , B‐9000 Ghent, Belgium |
| Abstract: | Contamination of brewer's pitching yeast cultures with wild‐type yeasts or bacteria is unwanted as it can corrupt the fermentation outcome and causes huge economic losses for the brewing industry. The applicability of matrix‐assisted laser desorption/ionization time‐of‐flight mass spectrometry (MALDI‐TOF MS) as a fast tool to monitor the purity of brewer's yeast cultures was investigated. This proof of concept was examined for a brewer's yeast strain contaminated with wild‐type yeast and for bottled beer produced by fermentation with that particular contaminated brewer's yeast strain. The data demonstrated that MALDI‐TOF MS is very suitable to discriminate between brewing and non‐brewing yeast strains. Copyright © 2014 The Institute of Brewing & Distilling |
| Keywords: | MALDI‐TOF MS brewer's yeast beer spoilage |