title: The effect of temperature on the essential oil components of Salvia potentillifolia obtained by various methods.
abstract: The chemical compositions of the essential oils of Salvia potentillifolia (Lamiaceae) were analyzed by GC and GC-MS. The oils were obtained by four different methods (hydrodistillation, steam distillation, and two extraction methods) to investigate the effect of temperature on the volatile compounds. In total, 121 components were detected in the various oils. The major compounds characterized were alpha-pinene (30.2, 31.2, 10.6, and 14.8%) and beta-pinene (15.0, 14.6, 7.6, and 11.4%), respectively. Surprisingly, the percentage concentrations of alpha-pinene and beta-pinene in the hydrodistilled and steam distilled oils were high, even though prepared at high temperature, whereas the contents of both compounds were lower in the essential oils obtained by the extraction methods prepared without added heat. The percentage concentration of 8,13-epoxy-labda-14-en-2-one, a diterpenoid, in the extracted essential oil was 22 times higher than in the hydrodistilled and steam distilled essential oils. However, the concentrations of cis-p-menth-2-en-1-ol was four times, and beta-bourbonene and beta-caryophyllene two times superior than their percentage concentrations in the hydrodistilled and steam distilled essential oils.
authors.affiliation: Muğla University, Faculty ofArts and Sciences, Department of Chemistry, 48121 Muğla, Turkey.
authors.forename: Mehmet
authors.initials: M
authors.lastname: Oztürk
authors.forename: Gülsen
authors.initials: G
authors.lastname: Tel
authors.forename: Mehmet Emin
authors.initials: ME
authors.lastname: Duru
authors.forename: Mansur
authors.initials: M
authors.lastname: Harmandar
authors.forename: Gülaçti
authors.initials: G
authors.lastname: Topçu
mesh_terms: D008401:Gas Chromatography-Mass Spectrometry; D006586:Hexanes / Q000737:chemistry; D009822:Oils, Volatile / Q000737:chemistry*; D027544:Salvia / Q000737:chemistry*; D012997:Solvents; D013696:Temperature; D014421:Turkey
chemical_list: D006586:Hexanes; D009822:Oils, Volatile; D012997:Solvents