Volatile Constituents from the Leaves of ThreeCoespeletiaSpecies from the Venezuelan Andes

Autor:	Rosa Aparicio, Marianella Romero, Nancy Khouri, Luis B. Rojas, Alfredo Usubillaga
Rok vydání:	2002
Předmět:	Coespeletia moritziana Monoterpene Botany General Chemistry β phellandrene Biology Asteraceae biology.organism_classification Coespeletia thyrsiformis Coespeletia Coespeletia spicata Germacrene D
Zdroj:	Journal of Essential Oil Research. 14:37-39
ISSN:	2163-8152 1041-2905
DOI:	10.1080/10412905.2002.9699755
Popis:	Coespeletia moritziana (Sch. Bip. ex Wedd.) Cuatr., Coespeletia spicata (Sch. Bip. ex Wedd.) Cuatr., and Coespeletia thyrsiformis (A.C. Smith) Cuatr. are woolly shrubs that grow in the Venezuelan Andes above 2800m. The essential oils from the leaves of these plants, obtained by hydrodistillation, were analyzed by GC and GC/MS. Monoterpene hydrocarbons constituted the main fraction in the oils of C. moritziana and C. spicata (80.1%-87.9%), but they made-up only 39.6% of the oil of C. thyrsiformis which showed a high content of sesquiterpenes (47.6%). The main components of the oils of the three species were α-pinene (20.4–47.0%) and β-pinene (9.8–20.9%). Germacrene D (14.5%) was the second most abundant compound in the oil of C. thyrsiformis.
Databáze:	OpenAIRE
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