1. Department of Biology Faculty of Science, University of Maroua, Maroua, Cameroon
2. Fruit and Vegetable Technology Department, CSIR-Central Food Technology Research Institute, Mysuru, India
3. Department of Life and Earth Sciences, Higher Teachers’ Training College of Maroua, University of Maroua, Maroua, Cameroon
4. Department of Chemistry, Faculty of Science, University of Maroua, Maroua, Cameroon