Optimisation de l'extraction des huiles essentielles d'eucalyptus globulus EG

Abstract

Eucalyptus globulus is a plant well known for its therapeutic and sanitizing properties. In order to highlight the essential oils (ETs) of its leaves, our study focused on determining the optimal conditions for the extraction of ETs carried out by hydro-distillation. For this reason, one optimization method was followed: an optimization by planning of the experiments (the factorial plan). Three operating parameters were chosen: the quantity of EG, the volume of water and the time extraction. From the results obtained, it can be seen that the yield of the essential oil is 1% to 4.2%. The optimal return obtained by the factorial plan is 4.2%. It was obtained for the extraction time 180 min, 750 ml of water and 70 g of plant material. The result of the physical and chemical analysis show that properties such as refractive index and pH are conform to the standard (AFNOR), while the acid number and density are not.