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Ultrason Sonochem

Title:		The combined extraction of sage (Salvia officinalis L.): ultrasound followed by supercritical CO2 extraction
Author(s):		Glisic SB; Ristic M; Skala DU;
Address:		"Department of Organic Chemical Technology, Faculty of Technology and Metallurgy, University of Belgrade, Karnegijeva 4, 11120 Belgrade, Serbia. sglisic@tmf.bg.ac.rs"
Journal Title:		Ultrason Sonochem
Year:		2011
Volume:		20100701
Issue:		1
Page Number:		318 - 326
DOI:		10.1016/j.ultsonch.2010.06.011
ISSN/ISBN:		1873-2828 (Electronic) 1350-4177 (Linking)
Abstract:		"A wide spectrum of phytochemicals could be isolated from sage (Salvia officinalis L.) using different extraction or distillation technique: the supercritical fluid extraction (SFE), the volatiles compounds (monoterpenes and sesquiterpenes) isolation using hydrodistillation or higher molecular compounds with Soxhlet extraction or ultrasound-assisted extraction. The combination of ultrasound-assisted extraction followed by re-extraction of obtained extract with supercritical CO(2) was performed in this study. The goal of performed investigation was to concentrate diterpenes present in sage extract which are generally considered to be responsible for antioxidant activity of extracted compounds. The fractionation using the supercritical CO(2), and different combination of the ultrasound-assisted solvent extractions (water-ethanol mixture or only water) followed by supercritical CO(2) re-extraction of obtained extract or treated plant material were analyzed and compared. Based on the results of these investigations it could be proposed the best extraction procedure: the ultrasound pretreatment of plant material with distilled water and re-extraction of plant material (residue) using supercritical CO(2). That procedure gives two valuable products: the ultrasound extract which is rich in sugars and possess the immunomodulatory activity and supercritical extract which is rich in diterpenes and sesquiterpenes"
Keywords:		"Carbon Dioxide/chemistry/*isolation & purification Chromatography, Supercritical Fluid/*methods Plant Extracts/chemistry/*isolation & purification Salvia officinalis/*chemistry *Ultrasonics;"
Notes:		"MedlineGlisic, Sandra B Ristic, Mihajlo Skala, Dejan U eng Research Support, Non-U.S. Gov't Netherlands 2010/07/17 Ultrason Sonochem. 2011 Jan; 18(1):318-26. doi: 10.1016/j.ultsonch.2010.06.011. Epub 2010 Jul 1"