Journal of Dairy & Veterinary Sciences - Juniper Publishers Introduction Essential oils are aromatic hydrophobic liquids extracted commonly by hydro distillation from a diverse number of plant parts; this includes but is not limited to flowers, buds, seeds, leaves, twigs, bark, wood, fruits, receptacles and roots [ 1 ]. Specific compounds of interest can be obtained from processing plant tissue and using separation techniques. However this approach is expensive, significant amounts of plant material are needed (unfavorable for exotic plant species), and reduced yields are usually obtained. Hence, when on high demand, or the desired compound is identified and isolated, it can be synthetically manufactured. These oils often contain diverse families of compounds which convert them in complex chemical mixtures [ 2 ]. Other biochemically active groups of compounds (e.g. polyphenols, glycosides) are usually extracted directly from the plant tissu
