Relieving Chemical Composition Of Volatile Oil Of Traditional Chinese Medicines By Gc / Ms

The modernization of traditional Chinese medicines(TCMs) havebeen the most popular research of the contemporary development ofTCMs and in the field of the medicines at home and abroad. TCM is verycomplicated system, there are still many components can't be identifiedclearly.During the chromatograph analysis,because of the uncontrollablefactors and the overlaps in the fingerprint make the identification of thecomponents more difficult. In chapter two and three, the components ofvolatile oils from six pungent in flavor and cool in nature TCMs(HerbaMenthae, Radix Bupleuri, Radix Puerariae, Flos Chrysanthemi, FolirmMori and Fructus Arctii)for relieving the exterior syndrome and sevenpungent in flavor and warm in nature TCMs(Rhizoma seu RadixNotopterygii, Herba Asari, Radix Angelicae Dahuricae, RadixLedebouriellae, Fructus Xanthii, Tamarix chinensis Lour, HerbaSchizonepetae)for relieving the exterior syndrome were mainly identifiedby GC/MS. In chapter two, the overlaps were analysed with the help ofheuristic evolving latent projections(HELP)resolution.In chapter three, thecomponents which don't have selective area were identified by SFAwhich can obtain the mass spectrum(MS) directly and then thechromatogram. Finished the qualitative analysis by searching the purespectrums in the database NIST107 and quantitative analysis by areanormalization.During the qualitative analysis by chromatograph, it is difficult todetermine the structure by MS because some of them are similar to eachother. In chapter four, the gas chromatography(GC) retention index(RI) ofthe components were calculated and compared with each other. It is morereliable with the assistant of GC retention index.At present, few researches have focused on the comparative researchon chemical composition of volatile oils from TCMs for relieving theexterior syndromes, the volatile oils were only considered as the effectivecomposition as a whole. In chapter five, comparative study on chemicalcomponents in essential oils from TCMs for relieving the exteriorsyndromes was done and the effective and characteristic compositions concretely were analysed.The effective compositions were studied andthe fingerprints were found and the chemical components are differentmaybe resulting from the co-effective function of TCMs. So it is difficultto conclude that which are the common effective chemical components ofthis series of TCMs. But maybe 1R-a-Pinene, (-)-β-Pinene, D-Limonene,β-Cymene andβ-Elemen are parts of the effective components.