1. Food and Nutrition Science Laboratory, International Institute of Tropical Agriculture (IITA), PMB 5320, Oyo Road, Ibadan, Oyo State, Nigeria
2. Maize Breeding Unit, International Institute of Tropical Agriculture (IITA), PMB 5320, Oyo Road, Ibadan, Oyo State, Nigeria
3. Chemistry Department, Ekiti State University, Ado-Ekiti, PMB 5363, Ekiti State, Nigeria