title: Identification and determination of triterpenoids in Hieracium pilosella L.
abstract: Fractions of triterpenoids have been isolated from herb, inflorescences, and rhizomes with roots of Hieracium pilosella by typical extraction with petroleum ether. The fraction from inflorescences was investigated using GC-MS techniques. The occurrence of alpha- and beta-amyrin, taraxerol, taraxasterol, and fern-7en-3beta-ol has been observed. Quantitative analysis was also performed and taraxasterol is distinctly predominant in this triterpenoid fraction. Thin-layer chromatography on silica gel was performed on all the investigated fractions and additionally revealed the occurrence of lupeol and psi-taraxasterol in vestigial quantities. All of the triterpenoid components are reported for the first time in the investigated plant.
authors.affiliation: Department of Pharmaceutical Botany, Skubiszewski Medical University of Lublin, Lublin, Poland. migg1@wp.pl
authors.forename: Monika
authors.initials: M
authors.lastname: Gawrońska-Grzywacz
authors.forename: Tadeusz
authors.initials: T
authors.lastname: Krzaczek
mesh_terms: D019659:Asteraceae / Q000737:chemistry*; D002855:Chromatography, Thin Layer; D013058:Mass Spectrometry; D015394:Molecular Structure; D013729:Terpenes / Q000032:analysis* / Q000737:chemistry
chemical_list: D013729:Terpenes