title: [Direct identification of Ophiogon japonicus (Thunb.)Ker-Gawl. from its confusable varieties by second derivative FTIR spectroscopy combined with statistics].
abstract: In order to establish the theory and method for the identification of Ophiogon japonicus (Thunb.)Ker-Gawl. of traditional Chinese herbal medicines and its confusable varieties, second derivative FTIR spectroscopy was used combined with statistics. Samples were collected directly by Fourier Transform Infrared (FTIR) spectra with OMNI-Sampler. Then through converting FTIR spectra of the samples into second derivative spectra by derivative spectra software, Ophiogon japonicus (Thunb.)Ker-Gawl. could be identified from the confusable varieties with statistics. The result shows that the second derivative FTIR of Ophiogon japonicus (Thunb.)Ker-Gawl. and its confusable varieties are different, which differ greatly in 2 000-650 cm(-1) range in second derivative FTIR spectroscopy. The Ophiogon japonicus (Thunb.)Ker-Gawl. and its confusable varieties can be identified by identifying the inner layer parts of the cuticles of samples by second derivative FTIR spectroscopy with statistics directly, rapidly and accurately.
authors.affiliation: College of Chemistry and Life Sciences, Zhejiang Normal University, Jinhua 321004, China.
authors.forename: Cun-gui
authors.initials: CG
authors.lastname: Cheng
authors.forename: Cui-rong
authors.initials: CR
authors.lastname: Sun
authors.forename: Yuan-jiang
authors.initials: YJ
authors.lastname: Pan
mesh_terms: D004365:Drugs, Chinese Herbal / Q000737:chemistry / Q000302:isolation & purification*; D008516:Medicine, Chinese Traditional / Q000592:standards*; D011420:Propiolactone / Q000737:chemistry; D012984:Software; D017550:Spectroscopy, Fourier Transform Infrared / Q000379:methods* / Q000592:standards; D013057:Spectrum Analysis
chemical_list: D004365:Drugs, Chinese Herbal; D011420:Propiolactone