GC-MS Analysis of Chemical Components of Volatile Oil from Sweet Broomwort Herb

Objective:To ananlyze the chemical constituents of the volatile oil from Sweet Broomwort Herb in Guangxi and determine their contents.Method: The volatile oil was extracted from Sweet Broomwort Herb by steam distillation,the amount of the components from the volatile oil was separated and identified by GC-MS,and the relative content of each component was calculated by area normalization method.Result: Fourty nine compounds were separated by GC and 30 of them were identified,which accounted for 93.97% of volatile oil.The major components were 2-pentadecanone,6,10,14-trimethyl-(19.75%),caryophyllene(15.33%),alpha.-caryophyllene(10.14%),(cyclobuta[1,2:3,4]dicyclopentene,decahydro-3a-methyl-6-methylene-1-(1-methylethyl)-,[1S-(1.alpha.,3a.alpha.,3b.beta.,6a.beta.,6b.alpha.)](6.53%),caryophyllene oxide(4.90%),(+)-epi-bicyclosesquiphellandrene(4.69%),Ar-tumerone(4.57%),heptadecane(4.13%),tetradecanal(2.33%),phthalic acid,isobutyl undecyl ester(2.11%) et al.Conclusion: The volatile oils mainly consisted of fatty acid,esters,alcohols,aldehydes,hydrocarbons;the analytic results can provided evidence for quality control and further exploitation of Sweet Broomwort Herb.