1. Laboratory of Food Process Engineering, University of Liege; Gembloux Agro-Bio Tech; Passage des Déportés Gembloux Belgium
2. Department of Industrial Biological Chemistry, University of Liege; Gembloux Agro-Bio Tech; Passage des Déportés Gembloux Belgium
3. Department of Chemistry and Agricultural Industry; University of Kinshasa; Kinshasa Democratic Republic of Congo