1. Hamburg School of Food Science – Institute of Food ChemistryUniversity of Hamburg Grindelallee 117 DE-20146 Hamburg Germany
2. Chair of Medical Microbiology and Hospital Epidemiology, Max von Pettenkofer Institute, Faculty of MedicineLMU Munich Germany
3. German Center for Infection Research (DZIF)Munich Site DE-80336 Munich Germany
4. BASF SE Carl-Bosch-Straße 38 DE-67056 Ludwigshafen Germany
5. Department of ChemistryTechnical University of Munich DE-85747 Garching Germany