1. Department of Food Science and Technology, Faculty of Agriculture; Sokoine University of Agriculture; Morogoro Tanzania
2. Department of Food Safety and Food Quality; Laboratory of Food Preservation and Food Microbiology, Faculty of Bioscience Engineering, University of Ghent; 9000 Ghent Belgium
3. Food Quality and Design, Department of Agrotechnology and Food Sciences; Wageningen University; 6708 WG Wageningen The Netherlands