1. Department of Microbiology and Biotechnology, Max Rubner-Institut, Federal Research Institute for Nutrition and Food, Hermann-Weigmann-Str. 1, 24103 Kiel, Germany
2. Laboratory of Microbiology and BCCM/LMG Bacteria Collection, Ghent University, Ledeganckstraat 35, B-9000 Ghent, Belgium
3. Lehrstuhl für Mikrobielle Ökologie, ZIEL-Institute for Food and Health, Technische Universität München, Weihenstephaner Berg 3, D-85354 Freising, Germany