1. Department of Food Science, Danish Institute of Agricultural Sciences, Research Centre Aarslev, Kirstinebjergvej 10, DK-5792 Aarslev, Denmark, Department of Clinical Microbiology, University Hospital (Rigshospitalet), Tagensvej 20, DK-2200, Copenhagen, Denmark, and Department of Medicinal Chemistry, The Danish University of Pharmaceutical Sciences, Universitetsparken 2, DK-2100, Copenhagen Ø, Denmark