1. Natural Products Chemistry Research Unit, Department of Chemistry, Faculty of Science, University of Dschang, Dschang, Cameroon
2. Research Unit of Microbiology and Antimicrobial Substances, Department of Biochemistry, Faculty of Science, University of Dschang, Dschang, Cameroon
3. Food Science Program, Department of Chemistry, and Institute of Biochemistry, Carleton University, Ottawa, Canada