Dr. Mustapha Diaf has completed his Ph.D. in Food and Human Nutrition (2015) from Djillali Liabes University of Sidibel Abbes, Algeria. He is having more than eight years of experience in teachingat this university; first as an assistant since 2008; then as an assistant professor between 2012-2014 and currently he holds the rank of associate professor in the Department of Biology. He is serving as associate editor and also reviewer for many journals.