1. Greenlife Trading PLC, Addis Ababa, Ethiopia
2. Department of Food Science and Technology, Botswana University of Agriculture and Natural Resources, Gaborone, Botswana
3. Department of Postharvest Management, College of Agriculture and Veterinary Medicine, Jimma University, P.O. Box 307, Jimma, Ethiopia
4. Faculty of Agriculture, Department of Engineering, Dalhousie University, P.O. Box 550, Truro, NS, Canada