Comparative analysis of volatile components from Clematis species growing in China.
The volatile components between stems and roots and also among five Clematis species from China were studied and analyzed by gas chromatography-mass spectrometry (GC-MS) combined with alternative moving window factor analysis (AMWFA), a new chemometric resolution method. Identification of the compounds was also assisted by comparison of temperature-programmed retention indices (PTRIs) on HP-5MS with authentic samples included in our own laboratory database under construction. A total of 153 different compounds accounting for 86.6-96.5% were identified and significant qualitative and quantitative differences were observed among the samples. The major volatile components in different essential oils from Clematis species were n-hexadecanoic acid and (Z,Z)-9,12-octadecadienoic acid. Our work further demonstrated chemometric resolution techniques upon the two-dimensional data and PTRIs can provide a complementary and convenient method for fast and accurate analysis of complex essential oils.
Zeng
Ying-Xu
YX
Research Center of Modernization of Chinese Herbal Medicine, College of Chemistry and Chemical Engineering, Central South University, Changsha, Hunan 410083, PR China.
Zhao
Chen-Xi
CX
Liang
Yi-Zeng
YZ
Yang
Hong
H
Fang
Hong-Zhuang
HZ
Yi
Lun-Zhao
LZ
Zeng
Zhong-Da
ZD
D039324:Clematis / Q000737:chemistry*; D004365:Drugs, Chinese Herbal / Q000032:analysis*; D008401:Gas Chromatography-Mass Spectrometry / Q000379:methods; D019787:Linoleic Acid / Q000032:analysis; D009822:Oils, Volatile / Q000032:analysis; D019308:Palmitic Acid / Q000032:analysis; D010938:Plant Oils / Q000032:analysis*
D004365:Drugs, Chinese Herbal; D009822:Oils, Volatile; D010938:Plant Oils; D019308:Palmitic Acid; D019787:Linoleic Acid