Essential oil of Lepechinia schiedeana (Lamiaceae) from Costa Rica

Abstract

The composition of the essential oil isolated by steam distillation from aerial parts of the Costa Rican herb Lepechinia schiedeana (Schlecht) Vatke (Lamiaceae) collected in El Empalme, Costa Rica, was determined by capillary gas chromatography (GC) and coupled gas chromatography-mass spectrometry (GC-MS) analyses. Fifty-one components were identified corresponding ca. 93% of the oil. The major components were -pinene (26.6%), cis -pinocamphone (25.1%), -3-carene (6.1%), trans -pinocamphone (4.0%), camphor (3.8%) and -caryophyllene (3.7%).Se estudiaron los constituyentes del aceite esencial de las partes aéreas de Lepechinia schiedeana (Lamiaceae) mediante el uso de cromatografía de gases (GC) y cromatografía de gases acoplada a espectrometría de masas (GC-MS). Se caracterizaron 51 compuestos (que representan ca. del 93% del aceite). El aceite se caracteriza por la presencia de gran cantidad de hidrocarburos monoterpénicos (45.9%) y de monoterpenos oxigenados (39.7%). Los componentes mayoritarios fueron -pineno (26.6%), cis -pinocanfona (25.1%), -3-careno (6.1%), trans -pinocanfona (4.0%), alcanfor (3.8%) y -cariofileno (3.7%).

Keywords

• Lepechinia schiedeana
• Lamiaceae
• essential oil composition
• GC-MS
• phytochemistry