@article {1823,
	title = {Isolation of Thymus herba-barona volatiles by supercritical fluid extraction},
	journal = {Journal of Essential Oil Research},
	volume = {13},
	year = {2001},
	note = {From Duplicate 1 (                           Isolation of Thymus herba-barona volatiles by supercritical fluid extraction                         - De Gioannis, B; Marongiu, B; Porcedda, S; DeGioannis, B )                
},
	month = {2001///},
	pages = {240 - 244},
	address = {Affiliation: Dipartimento di Scienze Chimiche, Università di Cagliari, Cittadella Universitaria Monserrato, St. Prov. Sestu, km. 0.770 SS 5541, 090421 Cagliari, Italy},
	abstract = {A volatile concentrate of Thymus herba-barona was isolated by supercritical CO2 extraction with a fractional separation technique. GC/MS analysis of the various fractions obtained at different extraction times and fractionation conditions allowed the identification of the best operating conditions to isolate the volatile extract. A good extraction performance was obtained operating at 90 bar and 50 degreesC for 300 min. The optimum fractionation was achieved by operating at 90 bar and -10 degreesC in the first separator and at 15 bar and 15 degreesC in the second one. The influence of extraction pressure and of extraction time on the extract composition were also evaluated. A comparison between a hydrodistilled oil of Thymus herba-barona and the supercritical extract is also given.},
	keywords = {Carvacrol, Composition, Essential oil composition, Labiatae, Supercritical fluid extract, Thymol, Thymus herba-barona},
	url = {http://www.scopus.com/scopus/inward/record.url?eid=2-s2.0-0034876606\&partnerID=40\&rel=R6.5.0},
	author = {Gioannis, B De and Marongiu, B and Porcedda, S}
}
@article {1708,
	title = {Extraction of thyme oil: Comparison between hydrodistillation and supercritical CO2 extraction},
	journal = {Acta Pharmaceutica},
	volume = {51},
	year = {2001},
	note = {Cited By (since 1996): 1},
	month = {2001///},
	pages = {305 - 310},
	address = {Affiliation: Department of Chemical Engineering, Faculty of Technology, Skopje, Macedonia},
	abstract = {Supercritical fluid extraction (SFE) with carbon dioxide and hydrodistillation (HD) were compared as methods to isolate essential oil from thyme herb (Thymus serpyllum, L.). The SFE extraction was performed in a semibatch apparatus and the rate of extraction was found dependent on the extraction pressure and temperature and on the amount of carbon dioxide passed through the extractor. The most suitable conditions for the extraction were 11 MPa and 50{\textdegree}C. The compounds extracted by both SFE and HD were identified by gas chromatography (GC) and gas chromatography-mass spectrometry (GC-MS). The difference in the aroma of the products was quite noticeable and can be attributed to qualitative and quantitative differences in the extracts and hydrodistillates. Predominance of aromatic alcohols carvacrol and thymol and their biosynthetic precursors p-cymene and γ-terpinene was revealed in both SFE extracts and HD oil. The SFE extracts also contained water and cuticular waxes; longer extraction times and higher pressures resulted in a higher percentage of water and waxes in the extract.},
	keywords = {Carvacrol, Essential oil, Hydrodistillation, L. (Lamiaceae), P-cymene, Supercritical fluid extraction, Thymol, Thymus serpyllum, γ-terpinene},
	url = {http://www.scopus.com/scopus/inward/record.url?eid=2-s2.0-0035703173\&partnerID=40\&rel=R6.5.0},
	author = {Aleksovski, S A and Sovova, H and Poposka, F A}
}
