The identification of the components and peak identification were done by comparing their retention time with respect to the n-alkane series (C6-C22) internal standards under identical experimental conditions (Adams, 2001). The mass spectra and relative Retention Index (RI) were compared with thoseof the commercial NIST (National Institute of Standards and Technology, Gaithersburg, MD, USA) mass spectral library (NIST 05 and NIST 05 s). The relative amounts of the individual components were calculated based on the GC integrator peak areas without using correction factors.