title: Bioactive components of the hop strobilus: comparison of different extraction methods by capillary electrophoretic and chromatographic methods.
abstract: In the present study, the composition of the hop strobilus extract by using different extraction methods under different solvent conditions was analysed and compared. Several separation methods were applied to obtaining detailed information about the hop extract: capillary zone electrophoresis (CZE), high-performance liquid chromatography-mass-spectrometry (HPLC-MS/MS) and gas chromatography-mass-spectrometry (GC-MS). The electropherograms of different extracts varied dramatically. The oxidation reaction of the hop strobilus extract was examined.
authors.affiliation: Department of Chemistry, Faculty of Science, Tallinn University of Technology, Tallinn, Estonia. helmja@staff.ttu.ee <helmja@staff.ttu.ee>
authors.forename: Kati
authors.initials: K
authors.lastname: Helmja
authors.forename: Merike
authors.initials: M
authors.lastname: Vaher
authors.forename: Tõnu
authors.initials: T
authors.lastname: Püssa
authors.forename: Kristjan
authors.initials: K
authors.lastname: Kamsol
authors.forename: Anne
authors.initials: A
authors.lastname: Orav
authors.forename: Mihkel
authors.initials: M
authors.lastname: Kaljurand
mesh_terms: D000975:Antioxidants / Q000302:isolation & purification*; D002851:Chromatography, High Pressure Liquid / Q000379:methods; D019075:Electrophoresis, Capillary / Q000379:methods; D005419:Flavonoids / Q000302:isolation & purification*; D008401:Gas Chromatography-Mass Spectrometry / Q000379:methods; D027582:Humulus / Q000737:chemistry*; D013058:Mass Spectrometry; D010936:Plant Extracts / Q000737:chemistry*; D052616:Solid Phase Extraction
chemical_list: D000975:Antioxidants; D005419:Flavonoids; D010936:Plant Extracts