1. Department of Chemistry, College of Science and Technology, University of Rwanda, P.O. Box 3900, Kigali, Rwanda
2. Department of Chemistry and Biochemistry, School of Sciences and Aerospace Studies, Moi University, Uasin Gishu County, P.O. Box 3900, Eldoret, Kenya
3. Africa Center of Excellence II in Phytochemicals, Textiles and Renewable Energy, Moi University, Uasin Gishu County, P.O. Box 3900, Eldoret, Kenya
4. Department of Quality Control and Quality Assurance, Product Development Directory, AgroWays Uganda Limited, Plot 34-60, Kyabazinga Way, P.O. Box 1924, Jinja, Uganda