1. Department of Food Science, Faculty of Science, University of Copenhagen, Rolighedsvej 26, 1958 Frederiksberg C, Denmark
2. Department of Plant and Environmental Sciences, Precision Engineering Workshop, University of Copenhagen, Thorvaldsensvej 40, 1871 Frederiksberg C, Denmark
3. CMET Center for Microbial Ecology and Technology, Faculty of Bioscience Engineering, Ghent University, Coupure Links 653, 9000 Gent, Belgium