Moreover, no systematic studies comparing antimicrobial activity (in liquid and vapour phase)of the geranium oil are available. Several approaches have been proposed to minimize EO concentrations. One of them is use of Eos in vapour phase to reduce the required concentration. EO in vapour phase could be highly effective against foodborne pathogens at relatively lower concentrations than the liquid phase, thereby causing minimum effect on organoleptic properties (Tyagi & Malik, 2011).