1. Faculty of Organic Agricultural SciencesDepartment of Agricultural and Biosystems EngineeringUniversity of Kassel Witzenhausen Germany
2. Department of Post‐Harvest ManagementCollege of Agriculture and Veterinary MedicineJimma University Jimma Ethiopia
3. Nutrition UnitDepartment of Population and Family HealthCollege of Public Health and Medical SciencesJimma University Jimma Ethiopia
4. School of Agriculture, Food and Rural DevelopmentNewcastle University Newcastle upon Tyne UK