1. Faculty of Science, Department of Chemistry, University of Ngaoundere, P.O. Box 454, Ngaoundere, Cameroon
2. Laboratory of Biophysics and Applied Biochemistry, Department of Food Science and Nutrition, ENSAI, University of Ngaoundere, P.O. Box 455, Ngaoundere, Cameroon
3. Laboratoire EBInnov, Ecole de Biologie Industrielle, 49 Avenue des Genottes, 95800, Cergy, France
4. Laboratory of Materials Sciences and Inorganic Chemistry, Department of Applied Chemistry, ENSAI, University of Ngaoundere, P.O. Box 455, Ngaoundere, Cameroon