title: Chemometric processing of pharmaceutical essential oil fingerprints -- comparison of GC, HPLC, TLC, IR spectroscopy, and differential scanning calorimetry.
abstract: Fifteen essential oils of pharmaceutical grade were fingerprinted by five techniques: TLC, GC, HPLC, attenuated total reflectance FTIR spectroscopy, and differential scanning calorimetry (DSC). Denoising and baseline removal was found to be a crucial step for correct comparative analysis. Standardization of the signal was not necessary in the presented case; however, it should be considered and checked in each case. Due to small variance explained by first two principal components (below 50%) and outlying observations, the main analysis was performed by Euclidean dendrograms. It was found that almost all techniques besides DSC find real chemical similarities; however, DSC can be used as an additional tool. The similarities among the five techniques were also compared and discussed.
authors: Medical University of Lublin, Department of Medicinal Chemistry, Lublin, Poland.
authors: Rafal
authors: R
authors: Pietraś
authors: Robert
authors: R
authors: Skibiński
authors: Hanna
authors: H
authors: Trebacz
authors: Anna
authors: A
authors: Gumieniczek
mesh_terms: D002152:Calorimetry, Differential Scanning; D002849:Chromatography, Gas; D002851:Chromatography, High Pressure Liquid; D002855:Chromatography, Thin Layer; D009822:Oils, Volatile / Q000032:analysis*; D017550:Spectroscopy, Fourier Transform Infrared
chemical_list: D009822:Oils, Volatile