title: Effects of solvent-free microwave extraction on the chemical composition of essential oil of Calamintha nepeta (L.) Savi compared with the conventional production method.
abstract: The essential oil of Calamintha nepeta has been obtained by solvent-free microwave extraction (SFME) and by classical hydrodistillation (HD). A comparative qualitative-quantitative study on the composition of the oils was carried out. A total of 38 compounds, constituting 97.6% of the oil, were identified in the oil obtained by SFME, whereas 46 compounds, representing 95.4% of the oil, were characterized in the HD oil. SFME-distilled oil is richer in lightly oxygenated monoterpenes (LOM) than HD oil. It also has a higher amount of sesquiterpenes and a lower quantity of hydrocarbon monoterpenes. HD oil seems to be affected by chemical changes more than SFME oil.
authors.affiliation: Dipartimento di Chimica Organica "E. Paternò", Università degli Studi di Palermo, Palermo, Italy. serenariela@unipa.it
authors.forename: Serena
authors.initials: S
authors.lastname: Riela
authors.forename: Maurizio
authors.initials: M
authors.lastname: Bruno
authors.forename: Carmen
authors.initials: C
authors.lastname: Formisano
authors.forename: Daniela
authors.initials: D
authors.lastname: Rigano
authors.forename: Sergio
authors.initials: S
authors.lastname: Rosselli
authors.forename: Maria Luisa
authors.initials: ML
authors.lastname: Saladino
authors.forename: Felice
authors.initials: F
authors.lastname: Senatore
mesh_terms: D019686:Lamiaceae / Q000737:chemistry*; D008872:Microwaves; D009822:Oils, Volatile / Q000032:analysis* / Q000737:chemistry*; D010936:Plant Extracts / Q000737:chemistry; D012997:Solvents; D013696:Temperature
chemical_list: D009822:Oils, Volatile; D010936:Plant Extracts; D012997:Solvents