1. Biochemistry, Food Sciences, Nutrition and Medicinal Plants Research Unit, Department of Biochemistry, Faculty of Science, University of Dschang, Dschang P.O. Box 6, Cameroon
2. Department of Biochemistry, Faculty of Science, University of Bamenda, Bambili P.O. Box 39, Cameroon
3. School of Nutrition, Agriculture and Natural Resources, Catholic University Institute of Buea, Buea P.O. Box 563, Cameroon
4. Food Science Program, Department of Chemistry, Institute of Biochemistry, Carleton University, 1125 Colonel by Drive, Ottawa, ON K1S 5B6, Canada