title: [Analysis of essential oil in herba ephedrae-ramulus cinnamomi by GC-MS and chemometric resolution method].
abstract: Gas chromatography/mass spectrometry, chemometric resolution method ( CRM) and overall volume integration method were used to analyze the essential components of herbal pair Herba Ephedrae-Ramulus Cinnamomi (HP HE-RC) and compare it with that of single herbs HE and RC. 72, 68, and 97 essential components in essential oil of HE, RC, and HP HE-RC were determined, accounting for 90. 08% , 91. 62% , and 89. 76% of total contents of essential oil of HE, RC, and HP HE-RC, respectively. The numbers of essential components of HP HE-RC are almost the summation of that of two single herbs, but some relative contents of them are changed. Some new components, such as 1, 6-dimethylhepta-1,3,5-triene, tetracyclo[4. 2. 1.1 (2,5 ). 0 (9,10) ] deca-3,7-diene, globulol, ( E, E) -6, 10,14-trimethyl-5,9,13-pentadecatrien-2 -one, etc. have been found in HP HE-RC because of chemical reactions and physical changes during the course of decocation.
authors.affiliation: College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China.
authors.forename: Xiao-ru
authors.initials: XR
authors.lastname: Li
authors.forename: Yi-zeng
authors.initials: YZ
authors.lastname: Liang
authors.forename: Xiao-ning
authors.initials: XN
authors.lastname: Li
mesh_terms: D002623:Chemistry Techniques, Analytical / Q000379:methods; D027424:Cinnamomum / Q000737:chemistry*; D004338:Drug Combinations; D029790:Ephedra sinica / Q000737:chemistry*; D008401:Gas Chromatography-Mass Spectrometry / Q000379:methods*; D009822:Oils, Volatile / Q000032:analysis* / Q000737:chemistry; D010938:Plant Oils / Q000032:analysis* / Q000737:chemistry; D015203:Reproducibility of Results
chemical_list: D004338:Drug Combinations; D009822:Oils, Volatile; D010938:Plant Oils