GC-MS Analysis on the Essential Oil from Zingiberis Rhizoma with Different Processing Methods

Objective To compare the essential oil from Zingiberis Rhizoma with different processing methods, study the effect of processing method on the chemical composition. Methods The chemical composition of essential oil were analyzed by GC-MS. Results 30 components were identified in essential oil from Zingiberis Rhizoma with two processing methods, including 25 components in fresh-cut processed Zingiberis Rhizoma and 11 components in traditional processed Zingiberis Rhizoma. There were high content of eudesmol, 5-(1, 5-dimethyl-4-hexene)-2-methyl-[S-(R~*, S~*)]-1,3-cyclohexadiene, camphene in fresh-cut processed samples and eudesmol, camphene, isoborneol in traditional processed samples, reached to 29.10%, 14.12%, 12.68% and 47.35%, 20.01%, 14.26%, respectively. The quantity and quality of chemical composition in essential oil had significant difference between different processing methods. Conclusion It provided experimental basis for quality evaluation of Zingiberis Rhizoma with different processing methods.