Seasonal variation in the essential oil of Pilocarpus microphyllus Stapf
An. acad. bras. ciênc
;
75(1): 27-31, Mar. 2003. tab
Article
in English
| LILACS
| ID: lil-331141
RESUMO
The essential oils of the leaves and fine stems of Pilocarpus microphyllus, collected on iron mineralized soil of the Serra de Carajás, Southeast of Pará State, Brazil, during the rainy and dry seasons, were obtained by hydrodistillation and analyzed by GC-MS. The main identified compounds were 2-tridecanone, beta-caryophyllene, 2-pentadecanone, caryophyllene oxide and germacrene D. Their percentage contents varied with the season, the greater values having been detected mainly in the rainy season. For 2-tridecanone and beta-caryophyllene the higher values were observed in the fine stem oils for the former, and in the leaf oils for the latter. For 2-pentadecanone, caryophyllene oxide and germacrene D they were also in the leaf oils. In general, the leaf oils were very distinguishable from those of fine stem oils, even in the same specimen
Full text:
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Index:
LILACS (Americas)
Main subject:
Seasons
/
Oils, Volatile
/
Pilocarpus
Language:
English
Journal:
An. acad. bras. ciênc
Journal subject:
Science
Year:
2003
Type:
Article
Affiliation country:
Brazil
Institution/Affiliation country:
Museu Paraense Emílio Goeldi/BR
/
Universidade Federal do Maranhäo/BR
/
Universidade Federal do Pará/BR
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