Articles
CHEMICAL COMPOSITION OF ESSENTIAL OIL OF LITSEA GUATEMALENSIS (MEXICAN BAY) FROM DIFFERENT PROVENANCES OF GUATEMALA
Article number
964_5
Pages
47 – 57
Language
English
Abstract
This study assessed the chemical composition of the essential oil (EO) of
L. guatemalensis from six different wild provenances of three life zones of Guatemala [Baja Verapaz (subtropical wet forest temperate), Sacatepequez (subtropical lower montane moist forest), and Solola (subtropical lower montane wet forest)] and five trademarks that are distributed in Guatemala City, in order to promote the conservation and utilization of these species.
Materials were dried, ground, and EO extracted by a Clevenger-type apparatus.
The oils were analyzed by GC-MS for compound identification.
In the sample from Baja Verapaz, EO yield was 0.8±0.2% and 12 compounds were detected, the main components being tetrahydrolinalool (57%), p-methoxycinnamaldehyde (10%), tetrahydrocitrocelene (5%), and 1,8-cineole (3%). In Sacatepequez, four samples were collected (Cerro Alux San Lucas, San Bartolomé Milpas Altas, Magdalena Milpas Altas, and San Miguel Dueñas), average yield was 0.6±0.2%, 6-34 compounds were detected, and the main components were identified as 1,8-cineole (13-58%), linalool (15-20%), and α-terpineol (0.5-12%). In the sample from Solola, a yield of 0.6±0.1% was obtained, 13 compounds were identified, and the main compounds were limonene (37%), tetrahydrolinalool (27%) and carvone (13%), showing small amounts of 1,8-cineole (1%). Commercially available samples included three samples of L. guatemalensis, one sample of L. glaucescens and one imported sample, determined as Laurus nobilis. In these samples, average yield was 1±0.3%, 12 to 26 compounds were detected, and the main components were 1,8-cineole (0.5-56%), limonene (4-16%), and tetrahydrolinalool (1-11%). A high chemical variability was demonstrated that depended on the life zone of the collection, and four groups were recognized according to their chemical composition analysis.
L. guatemalensis from six different wild provenances of three life zones of Guatemala [Baja Verapaz (subtropical wet forest temperate), Sacatepequez (subtropical lower montane moist forest), and Solola (subtropical lower montane wet forest)] and five trademarks that are distributed in Guatemala City, in order to promote the conservation and utilization of these species.
Materials were dried, ground, and EO extracted by a Clevenger-type apparatus.
The oils were analyzed by GC-MS for compound identification.
In the sample from Baja Verapaz, EO yield was 0.8±0.2% and 12 compounds were detected, the main components being tetrahydrolinalool (57%), p-methoxycinnamaldehyde (10%), tetrahydrocitrocelene (5%), and 1,8-cineole (3%). In Sacatepequez, four samples were collected (Cerro Alux San Lucas, San Bartolomé Milpas Altas, Magdalena Milpas Altas, and San Miguel Dueñas), average yield was 0.6±0.2%, 6-34 compounds were detected, and the main components were identified as 1,8-cineole (13-58%), linalool (15-20%), and α-terpineol (0.5-12%). In the sample from Solola, a yield of 0.6±0.1% was obtained, 13 compounds were identified, and the main compounds were limonene (37%), tetrahydrolinalool (27%) and carvone (13%), showing small amounts of 1,8-cineole (1%). Commercially available samples included three samples of L. guatemalensis, one sample of L. glaucescens and one imported sample, determined as Laurus nobilis. In these samples, average yield was 1±0.3%, 12 to 26 compounds were detected, and the main components were 1,8-cineole (0.5-56%), limonene (4-16%), and tetrahydrolinalool (1-11%). A high chemical variability was demonstrated that depended on the life zone of the collection, and four groups were recognized according to their chemical composition analysis.
Authors
S.M. Cruz, M. Mérida, F. Pérez, A. Santizo, A. Cáceres, M. Apel, A. Henriquez
Keywords
1,8-cineol, aromatic plants, chemical diversity, conservation, gas chromatography
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