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Phytochem Anal

Title:		Contribution of microwave accelerated distillation in the extraction of the essential oil of Zygophyllum album L
Author(s):		Tigrine-Kordjani N; Meklati BY; Chemat F;
Address:		"Laboratoire d'Analyse Organique Fonctionnelle, Faculte de Chimie, Universite des Sciences et de la Technologie Houari Boumediene, El Alia, BP 32, Bab Ezzouar, 16111 Algiers, Algeria. tigkor12@yahoo.fr"
Journal Title:		Phytochem Anal
Year:		2011
Volume:		20100907
Issue:		1
Page Number:		1 - 9
DOI:		10.1002/pca.1236
ISSN/ISBN:		1099-1565 (Electronic) 0958-0344 (Linking)
Abstract:		"INTRODUCTION: The aerial parts of Zygophyllum album L. are used in folk medicine as an antidiabetic agent and as a drug active against several pathologies. In this work we present the chemical composition of Algerian essential oils obtained by microwave accelerated distillation (MAD) extraction, a solventless method assisted by microwave. OBJECTIVE: Under the same analytical conditions and using GC-FID and GC-MS, the chemical composition of the essential oil of Zygophyllum album L. extracted by MAD was compared with that achieved using hydrodistillation (HD). METHODOLOGY: The extracted compounds were hydrosoluble, and they were removed from the aqueous solution by a liquid extraction with an organic solvent. RESULTS: Employing MAD (100 degrees C, 30 min), the essential oil contained mainly oxygenated monoterpenes with major constituents: carvone and alpha-terpineol. However, most of the compounds present in the hydrodistilled volatile fraction were not terpene species, with beta-damascenone as a major constituent. CONCLUSION: The MAD method appears to be more efficient than HD: after 30 min extraction time, the obtained yields (i.e. 0.002%) were comparable to those provided by HD after 3 h extraction. MAD seems to be more convenient since the volatile fraction is richer in oxygenated monoterpenes, species that are recognised for their olfactory value and their contribution to the fragrance of the essential oil"
Keywords:		"Distillation/*methods *Microwaves Oils, Volatile/*chemistry Plant Components, Aerial Plant Oils/*chemistry Pyrans/chemistry Terpenes/chemistry Zygophyllum/*chemistry;"
Notes:		"MedlineTigrine-Kordjani, Nacera Meklati, Brahim Youcef Chemat, Farid eng England 2010/09/08 Phytochem Anal. 2011 Jan-Feb; 22(1):1-9. doi: 10.1002/pca.1236. Epub 2010 Sep 7"