Abdallah Abu-Sheikh, chief executive and co-founder of Abu Dhabi-based Rizek, left, and Ahmed Mazrui, co-founder of the the start-up. Courtesy Rizek    
Abdallah Abu-Sheikh, chief executive and co-founder of Abu Dhabi-based Rizek, left, and Ahmed Mazrui, co-founder of the the start-up. Courtesy Rizek    

UAE start-up Rizek raises $10m to fuel expansion