1. Research Unit of Biochemistry of Medicinal Plants, Food Sciences and Nutrition, Department of Biochemistry, Faculty of Science, University of Dschang, P. O Box 67, Dschang, Cameroon
2. Laboratory of Biochemistry, Department of Biochemistry and Physiological Sciences, Faculty of Medicine and Biomedical Science, University of Yaounde I, P. O Box 1364, Yaounde, Cameroon