1. Department of Transformation and Quality Control of Fisheries Products; Institute of Fisheries and Aquatic Sciences at Yabassi; University of Douala B. P.; 7236 Douala Cameroon
2. Laboratory of Analytical Chemistry; Faculty of Sciences; University of Yaoundé I B. P.; 812 Yaoundé, Cameroon
3. Department of Chemistry; Faculty of Sciences; University of Dschang B. P.; 67 Dschang Cameroon