59 Corresponding author: Farida Benmeziane. Tel. 213 (775613108). Email:

1 Introduction Historically, men have always drawn from nature what to feed, to dress and to treat themselves. Four out of five people use plants to ward off their ills. In Africa, up to 80% of the population uses traditional medicine to treat themselves. Many studies indicated that people having a rich diet in fruits and vegetables suffer less from diseases related to aging like Alzheimer [1-4]. Today, consumers are not interested in the amount of food they consume, but rather on their...