title: [Comparative study of the spectral characteristics of ursolic acid between laser Raman spectra and IR spectrum].
abstract: In this article, HRD2 double-beam grating monochromator was used to record the laser Raman spectra of the ursolic acid and get the Raman spectral characteristics of the ursolic acid; Philips 100 double-beam grating monochronmator was used to record the IR spectra of the ursolic acid and get the IR spectral characteristics of the ursolic acid; the relationship of the wave peaks and the structural characteristics between the Raman spectra and IR spectra was analyzed, the attribution of the functional groups in the structural characteristics of ursolic acid was basically defined, providing two basic spectra areas (area A: 1,386, 1,370, 1,363 cm-1, and area B: 1,304, 1,269, 1,237 cm-1), which identify the matter of ursolic acid; the comparison was made between the Raman spectra and the IR spectra, and showed that Raman spectra are much more informative in structural characteristics than the IR spectra, and the main characteristic peaks of the IR spectra can be found, which correspond to peaks in the Raman spectra; the peaks in the Raman spectra are clear and distinguishable and are used to assign the functional groups easily. In addition to IR spectra, Raman spectra are used as an effective method to analyze natural herbs.
authors.affiliation: Basic Medical College of Nanjing University of TCM, Nanjing 210029, China.
authors.forename: Bai-ping
authors.initials: BP
authors.lastname: Gu
authors.forename: Liang
authors.initials: L
authors.lastname: Zhu
authors.forename: Wei-zhong
authors.initials: WZ
authors.lastname: Ke
authors.forename: Jian-wei
authors.initials: JW
authors.lastname: Chen
mesh_terms: D007834:Lasers; D031347:Prunella / Q000737:chemistry; D013055:Spectrophotometry, Infrared; D013059:Spectrum Analysis, Raman; D014315:Triterpenes / Q000032:analysis / Q000737:chemistry*; D000097245:Ursolic Acid
chemical_list: D014315:Triterpenes; D000097245:Ursolic Acid