“…There are several extraction techniques such as steam distillation [2,5,8,15], hydro distillation [2,8,16], supercritical fluid extraction [13], soxhlet extraction [17], supercritical carbon dioxide [2,8], solvent extraction [15,18] and microwave assisted distillation [2,3]. Among all, steam distillation is the most popular due to operational cost, cleanliness, system cost, productivity and maintenance cost [18].…”