Articles
COMPOSITION AND YIELD OF ESSENTIAL OIL FROM LIPPIA CHIAPASENSIS GROWING WILD IN THE HIGHLANDS OF GUATEMALA
Article number
964_7
Pages
65 – 70
Language
English
Abstract
Composition and yield of essential oil of 13 specimens from four populations of Lippia chiapasensis Loes (Verbenaceae) were collected in the Guatemalan Highlands.
Eight specimens were collected in both dry and rainy seasons and the remaining five were collected only in one season of the year.
The essential oil was obtained from dried leaves through hydrodistillation using a Clevenger type apparatus.
Essential oil composition was determined by GC-FID by comparing retention times of standards compounds and retention indices for each corresponding peak.
The yield ranged from 0.4 to 1.9% in the dry season (both from Totonicapán) and from 0.2 to 1.7% in the rainy season (from San Marcos and Totonicapán, respectively). These results were statistically significant (p<0.05), indicating that specimens had a higher yield when collected during the dry season than during the rainy season.
L. chiapasensis showed high variability of essential oil composition among populations analyzed.
The main compounds in material collected during the dry season were 1,8-cineol (7.3-31.2%), (E)-dihydrocarvone (1.4-33.3%), geranial (11.2-27.2%), and bornyl acetate (2.1-21.6%), while the main compounds in material collected during the rainy season were (E)-dihydrocarvone (7.0-35.1%), 1,8-cinole (6.5-31.0%), bornyl acetate (0.2-17.5%), geranial (13.0-13.9%), and geranyl acetate (3.1-13.0%); these compounds are important in the cosmetic, condiment, and herbal industries.
This variability was found even among specimens located close together, suggesting the occurrence of chemotypes for this species, as in the case of L. alba and L. graveolens.
Eight specimens were collected in both dry and rainy seasons and the remaining five were collected only in one season of the year.
The essential oil was obtained from dried leaves through hydrodistillation using a Clevenger type apparatus.
Essential oil composition was determined by GC-FID by comparing retention times of standards compounds and retention indices for each corresponding peak.
The yield ranged from 0.4 to 1.9% in the dry season (both from Totonicapán) and from 0.2 to 1.7% in the rainy season (from San Marcos and Totonicapán, respectively). These results were statistically significant (p<0.05), indicating that specimens had a higher yield when collected during the dry season than during the rainy season.
L. chiapasensis showed high variability of essential oil composition among populations analyzed.
The main compounds in material collected during the dry season were 1,8-cineol (7.3-31.2%), (E)-dihydrocarvone (1.4-33.3%), geranial (11.2-27.2%), and bornyl acetate (2.1-21.6%), while the main compounds in material collected during the rainy season were (E)-dihydrocarvone (7.0-35.1%), 1,8-cinole (6.5-31.0%), bornyl acetate (0.2-17.5%), geranial (13.0-13.9%), and geranyl acetate (3.1-13.0%); these compounds are important in the cosmetic, condiment, and herbal industries.
This variability was found even among specimens located close together, suggesting the occurrence of chemotypes for this species, as in the case of L. alba and L. graveolens.
Authors
M. Mérida, A. Cáceres, F. Pérez, P. Navas
Keywords
1, 8-cineole, (E)-dihydrocarvone, bornyl acetate, geranial, limonene, neral
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