title: The loss of essential oil components induced by the Purge Time in the Pressurized Liquid Extraction (PLE) procedure of Cupressus sempervirens.
abstract: The influence of different Purge Times on the effectiveness of Pressurized Liquid Extraction (PLE) of volatile oil components from cypress plant matrix (Cupressus sempervirens) was investigated, applying solvents of diverse extraction efficiencies. The obtained results show the decrease of the mass yields of essential oil components as a result of increased Purge Time. The loss of extracted components depends on the extrahent type - the greatest mass yield loss occurred in the case of non-polar solvents, whereas the smallest was found in polar extracts. Comparisons of the PLE method with Sea Sand Disruption Method (SSDM), Matrix Solid-Phase Dispersion Method (MSPD) and Steam Distillation (SD) were performed to assess the method's accuracy. Independent of the solvent and Purge Time applied in the PLE process, the total mass yield was lower than the one obtained for simple, short and relatively cheap low-temperature matrix disruption procedures - MSPD and SSDM. Thus, in the case of volatile oils analysis, the application of these methods is advisable.
authors.affiliation: Department of Chromatographic Methods, Faculty of Chemistry, Maria Curie-Sklodowska University, pl. Maria Curie-Sklodowska 3, 20-031 Lublin, Poland. dawid@poczta.umcs.lublin.pl
authors.forename: Andrzej L
authors.initials: AL
authors.lastname: Dawidowicz
authors.forename: Natalia B
authors.initials: NB
authors.lastname: Czapczyńska
authors.forename: Dorota
authors.initials: D
authors.lastname: Wianowska
mesh_terms: D002849:Chromatography, Gas; D029781:Cupressus / Q000737:chemistry*; D057168:Distillation; D057927:Hydrophobic and Hydrophilic Interactions; D059625:Liquid-Liquid Extraction / Q000379:methods*; D009822:Oils, Volatile / Q000302:isolation & purification*; D010938:Plant Oils / Q000302:isolation & purification*; D011312:Pressure; D012822:Silicon Dioxide; D012997:Solvents; D013227:Steam; D013997:Time Factors
chemical_list: D009822:Oils, Volatile; D010938:Plant Oils; D012997:Solvents; D013227:Steam; D012822:Silicon Dioxide