1. Laboratory of Natural Substances Valorization, Djilali Bounaama University of Khemis Miliana, Rout Theniet El-Had 44225, Khemis Miliana, Algeria
2. Agro Bio Chem Department, General and Organic Chemistry, Gembloux Agro Bio Tech University of Liège, B-5030 Gembloux, Belgium
3. Agro Bio Chem Department, Analytical Chemistry, Gembloux Agro Bio Tech, University of Liège, B-5030 Gembloux, Belgium