Comparative Analysis of Volatile Components in Fu brick Tea by Simultaneous Distillation and Headspace Solid-phase Micro-extraction

In order to compare the extraction efficiencies of volatile compounds by different methods from Fu brick Tea,find an extraction method which was more suitable for the analysis of volatile components in Fu brick Tea. Gas chromatography-triple quadrupole series mass spectrometry(GC-QQQ-MS)was used to analysis of volatile components from Fu brick Tea. Compared with the effects of simultaneous distillation extraction(SDE)and head space solid-phase micro-extraction(HS-SPME)on the aroma components of Fu brick tea and the conditions of head space solid-phase micro-extractions were optimized. The results showed that the volatile components of Fu brick Tea from different extract method showed large differences. There were 90 kinds of volatile components combined extraction by the two methods,with 40 kinds of common components. Among them,79 kinds of compounds were extracted by SDE,mainly consisting of hydrocarbons,oxygen heterocyclic compounds,ketones and alcohols. The main compounds were phytone,cedrol,palmitic acid,butylated hydroxytoluene,dibenzofuran,phenanthrene,6,10-dimethyl-5,9-undecadien-2-one,1,2-dimethoxy-benzene,2-methyl-phenol,biphenyl. 50 kinds of compounds were extracted by HS-SPME,mainly consisting of hydrocarbons,oxygen heterocyclic compounds,ketones and alcohols. The main compounds were caffeine,diethyl phthalate,dibenzofuran,dihydroactinidiolide,biphenyl,6,10-dimethyl-5,9-undecadien-2-one,phytone,cedrol,phenanthrene,1,2,3-Trimethoxybenzene. The two methods had the advantages and disadvantages,complement each other,and combined analysis could obtain the more comprehensive,more complete and more accurate information of the volatile components in Fu brick Tea.