Analysis of volatile compound.
the volatile compounds of kaffir lime peel were analyzed using shimadzu gc-2010 gas chromatography system for source identification. then, the chemical compound was further analyzed using agilent gcms 7890a equipped with agilent 5975c mass selective detector and using hp-5ms column (30m x0.25mm x 0.25μm film thickness). the carrier gas for gc was helium with flow rate of 1.0ml/min and the apparatus was programmed as tabulated in Table 1.