Article
Chemical composition and antioxidant activity of Lippia species
Registro en:
SINGULANI, Junya de Lacorte e al. Chemical composition and antioxidant activity of Lippia species. Journal of Medicinal Plant Research, vol.6, n. 27, p. 4416-4422, 2012.
1996-0875
10.5897/JMPR12.533
Autor
Singulani, Junya de Lacorte
Silva, Pâmela Souza
Raposo, Nádia Rezende Barbosa
Siqueira Filho, Ezequias Pessoa de
Zani, Carlos Leomar
Alves, Tânia Maria Almeida
Viccini, Lyderson Facio
Resumen
Chemical composition of the hexanic fraction, antioxidant activity (DPPH assay) and total phenolic content (Folin-Ciocalteau assay) of aerial parts of sixteen Lippia species were determined. Hexanic fraction was analyzed by gas chromatography-mass spectrometry (GC-MS). The compounds β- myrcene, limonene, γ-terpinene, linalool, β-caryophyllene, germacrene D, α–copaene, β-bourbunene, β- elemene, aloaromadendrene, bicyclogermacrene, and δ-cadinene appeared in the chemical analysis in most of the Lippia hexanic fraction studied. This fraction showed low radical scavenging activity; however, the ethanolic fraction of Lippia species showed higher radical-scavenging activity than the commercial antioxidant butylated hydroxy toluene (BHT). Total phenolic content of the polar fraction, as gallic acid equivalents, ranged from 105.5 mg/g in Lippia pseudo-thea to 255.4 mg/g in Lippia sericea. The presence of phenolic compounds in the ethanolic fraction of Lippia spp. may also be the major cause of its high radical-scavenging activities.