Comparative Research on Volatile Oil Components in Different Parts of Magnolia officinalis Rehd.et Wils.var.bilob aRehd.et Wils.

The volatile oil components in different parts of Magnolia officinalis Rehd.et Wils.var.bilob aRehd.et Wils.were extracted by Headspace solid phase microextraction(HS-SPME),and the compositions were analyzed by gas chromatography-mass spectrometry(GC-MS).The root contained 19 compounds which eudesma-4(14),11-diene(26.04%),azulene,1,2,3,4,5,6,7,8-octahydro-1,4-dimethyl-7-(1-methylethylidene)-,(1S-cis)-(24.94%),caryophyllene(9.41%) and beta eucalyptus leaves alcohol(7.28%)were the main components,and 17 compounds were identified in stem where eudesm-4(14)-en-11-ol(36.93%),guaiol(10.21%),eudesma-4(14),11-diene(8.79%)and alpha.-cubebene(5.23%)were the main components,while 19 compounds were identified in leaf,and the main components of which were caryophy-llene(15.13%),borneol(8.71%),naphthalene,1,2,3,4-tetrahydro-1,6-dimethyl-4-(1-methylethyl)-,(1S-cis)-(8.55%),2-naphthalenemethanol,1,2,3,4,4a,5,6,7-octahydro-.alpha.,.alpha.,4a,8-tetramethyl-,(2R-cis)-(6.22%),p-allylphenol(5.81%)and alpha.-caryophyllene(5.58%),then the 21 compounds were identified in branch which mainly contained eudesm-4(14)-en-11-ol(21.44%),caryophyllene oxide(16.01%),pinane,2,3-epoxy-(7.62%),eudesma-4(14),11-diene(7.6%) and caryophyllene(6.53%).The comparative analysis results showed that different parts of Magnolia officinalis Rehd.et Wils.var.bilob aRehd.et Wils.volatile oil has some differences in composition and content.