title: A comparison between different techniques for the isolation of rosemary essential oil.
abstract: Traditional hydrodistillation (HD), supercritical fluid extraction (SFE), organic solvent extraction (SE), and water microwave assisted hydrodistillation (MAHD) techniques were compared and evaluated for their effectiveness in the isolation of rosemary essential oil. The microwave assisted hydrodistillation technique was optimized in terms of both delivered power and time duration. The extracts/distillates were analyzed by GC and GC-MS. Microwave distillation, which exploits the physical action of microwaves on plants, showed a series of advantages over the other approaches: low cost, use of water in sample pre-treatment step, greatly reduced isolation time, and attainment of high quality essential oil distillate. Moreover, the absence of environmental impact of this innovative technique was also emphasized.
authors.affiliation: Dipartimento Farmaco-Chimico, Facoltà di Farmacia, University of Messina, Viale Annunziata, 98168 Messina, Italy.
authors.forename: Maria Lo
authors.initials: ML
authors.lastname: Presti
authors.forename: Salvatore
authors.initials: S
authors.lastname: Ragusa
authors.forename: Alessandra
authors.initials: A
authors.lastname: Trozzi
authors.forename: Paola
authors.initials: P
authors.lastname: Dugo
authors.forename: Franco
authors.initials: F
authors.lastname: Visinoni
authors.forename: Alessia
authors.initials: A
authors.lastname: Fazio
authors.forename: Giovanni
authors.initials: G
authors.lastname: Dugo
authors.forename: Luigi
authors.initials: L
authors.lastname: Mondello
mesh_terms: D008401:Gas Chromatography-Mass Spectrometry; D006358:Hot Temperature; D008872:Microwaves; D009822:Oils, Volatile / Q000737:chemistry / Q000302:isolation & purification*; D010936:Plant Extracts / Q000737:chemistry; D010938:Plant Oils / Q000737:chemistry / Q000302:isolation & purification*; D027542:Rosmarinus / Q000737:chemistry; D012997:Solvents; D013237:Stereoisomerism
chemical_list: D009822:Oils, Volatile; D010936:Plant Extracts; D010938:Plant Oils; D012997:Solvents; C053775:rosemary oil