Determination of Volatile Oil from Zingiber striolatum Diels.by GC-MS

The volatile oil from Zingiber striolatum Diels flowers were extracted by vapor distillation and the chemical constituents were separated and identified by GC-MS.Then,the relative contents in percentage of compounds were determined by peak area normalization method.The results showed that more than 59 peaks were separated and 55 compounds accounting for 95.54% of the total extracted by steam distillation were identified.The major constituents were identified as olefins 49.08%,alcohols 22.39%,aldehydes 6.07%,esters 4.72%,oxides 4.25%,ketones 2.26%,hydrocarbons 2.19% and benzene derivative 1.81%.