[1] Univ Hamburg, Dept Microbiol & Biotechnol, Ohnhorststr 18, D-22609 Hamburg, Germany
[2] Radboud Univ Nijmegen, Microbiol cluster, RIBES, Heyendaalseweg 135, NL-6525 AJ Nijmegen, Netherlands
[3] Univ Bonn, Dept Food Microbiol & Hyg, Friedrich Hirzebruch Allee7, D-53115 Bonn, Germany
[4] IWW Nord GmbH, Diepholz, Germany