1. Nelson Mandela African Institution of Science and Technology, School of Life Science and Bioengineering, P.O. Box 447, Arusha, Tanzania.
2. University of Dar es Salaam, Department of Food Science and Technology, P.O. Box 35091, Dar es Salaam, Tanzania.
3. Tanzania Plant Health and Pesticides Authority (TPHPA) P.O. Box 3024, Arusha, Tanzania.
4. Department of Food Science and Agro-processing, Sokoine University of Agriculture, P.O. Box 3006, Chuo Kikuu, Morogoro, Tanzania.