title: Chemical composition and antioxidant activity of the essential oil of Tabernaemontana catharinensis A. DC. leaves.
abstract: The essential oils obtained by hydrodistillation from the leaves of Tabernaemontana catharinensis had their composition analysed by GC-MS. A total of 18 substances were identified, consisting of a complex mixture of sesquiterpenes (83.52%), monoterpenes (5.46%) and triterpenes (4.56%). The main components in the oil were β-caryophyllene (56.87%), α-cadinol (12.52%), 8S,13-cedran-diol (5.41%), α-terpineol (3.99%), β-eudesmol (2.54%), caryophyllene oxide (2.51%) and ethyl iso-allocholate (2.03%) along with β-cubebene, γ-cadinene, cubenol, 1,8-cineol, o-cymene, curcumenol, spathulenol, friedeline and β-sitosterol as minor constituents. An antioxidant property was tested with the oil obtained by means of 1,1-diphenyl-2-picrylhydrazyl assay; the oil presented interesting radical scavenging activity. To the best of our knowledge, this is the first study of the composition and antioxidant activity of essential oil from the T. catharinensis collected from Brazil.
authors.affiliation: Phytochemical Research Laboratory, Department of Industrial Pharmacy, Federal University of Santa Maria, Build 26, Room 1115, Santa Maria, RS 97105-900, Brazil. alineboligon@hotmail.com
authors.forename: Aline Augusti
authors.initials: AA
authors.lastname: Boligon
authors.forename: Thiago Guilherme
authors.initials: TG
authors.lastname: Schwanz
authors.forename: Mariana
authors.initials: M
authors.lastname: Piana
authors.forename: Rose Vanessa
authors.initials: RV
authors.lastname: Bandeira
authors.forename: Janaína Kieling
authors.initials: JK
authors.lastname: Frohlich
authors.forename: Thiele Faccim
authors.initials: TF
authors.lastname: de Brum
authors.forename: Marina
authors.initials: M
authors.lastname: Zadra
authors.forename: Margareth Linde
authors.initials: ML
authors.lastname: Athayde
mesh_terms: D000975:Antioxidants / Q000737:chemistry*; D000081005:Cyclohexane Monoterpenes; D003511:Cyclohexanols / Q000737:chemistry; D053138:Cyclohexenes / Q000737:chemistry; D000077591:Eucalyptol; D039821:Monoterpenes / Q000737:chemistry; D009822:Oils, Volatile / Q000737:chemistry*; D018515:Plant Leaves / Q000737:chemistry*; D000081223:Polycyclic Sesquiterpenes; D012717:Sesquiterpenes / Q000737:chemistry; D045787:Sesquiterpenes, Eudesmane / Q000737:chemistry; D012855:Sitosterols / Q000737:chemistry; D030014:Tabernaemontana / Q000737:chemistry*; D013729:Terpenes / Q000737:chemistry
chemical_list: D000975:Antioxidants; D000081005:Cyclohexane Monoterpenes; D003511:Cyclohexanols; D053138:Cyclohexenes; D039821:Monoterpenes; D009822:Oils, Volatile; D000081223:Polycyclic Sesquiterpenes; D012717:Sesquiterpenes; D045787:Sesquiterpenes, Eudesmane; D012855:Sitosterols; D013729:Terpenes; C445364:cadinol; C552245:curcumenol; C016775:alpha-terpineol; C054278:gamma-cadinene; C051082:beta-eudesmol; C025473:gamma-sitosterol; C013258:spathulenol; C024714:caryophyllene; D000077591:Eucalyptol