1. Laboratory of Microbiology, Department of Biochemistry and Microbiology, Faculty of Sciences, Ghent University,K. L., Ledeganckstraat 35, B-9000 Ghent,Belgium
2. Research Group of Industrial Microbiology and Food Biotechnology, Faculty of Sciences and Bioengineering Sciences, Vrije Universiteit Brussel,Pleinlaan 2, B-1050, Brussels,Belgium