Studies on essential oils, part 33: Chemical and insecticidal investigations on leaf oil of Coleus amboinicus Lour
Chemical investigations of the leaf essential oil of Coleus amboinicus by GC and GC-MS techniques indicated the presence of six components, accounting for 97% of the total oil. The major component was thymol (94.3%), followed by carvacrol (1.2%), 1,8-cineole (0.8%), p-cymene (0.3%), spathulenol (0.2...
| Autores: | , , , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2002 |
| País: | Argentina |
| Institución: | Consejo Nacional de Investigaciones Científicas y Técnicas |
| Repositorio: | CONICET Digital (CONICET) |
| Idioma: | inglés |
| OAI Identifier: | oai:ri.conicet.gov.ar:11336/62492 |
| Acceso en línea: | http://hdl.handle.net/11336/62492 |
| Access Level: | acceso abierto |
| Palabra clave: | Chemical Composition Coleus Amboinicus Essential Oil Insecticides Odontotermes Obesus https://purl.org/becyt/ford/1.4 https://purl.org/becyt/ford/1 |
| Sumario: | Chemical investigations of the leaf essential oil of Coleus amboinicus by GC and GC-MS techniques indicated the presence of six components, accounting for 97% of the total oil. The major component was thymol (94.3%), followed by carvacrol (1.2%), 1,8-cineole (0.8%), p-cymene (0.3%), spathulenol (0.2%), terpinen-4-ol (0.2%) and an unidentified component (1.4%). The oil was insecticidal to white termites (Odontotermes obesus Rhamb.) with 100% mortality at a dose of 2.5 × 10-2 mg/cm3 for 5 h exposure. This oil was also more active than the synthetic insecticides, Thiodan and Primoban-20, against termites, although it was ineffective against Tribolium castaneum, a stored product pest. Copyright © 2002 John Wiley & Sons, Ltd. |
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