Articles
COMPOSITION AND CHEMICAL VARIATION DURING DAYTIME OF CONSTITUENTS OF THE ESSENTIAL OIL OF POGOSTEMON PACHOULI PELLET LEAVES
Article number
629_20
Pages
145 – 147
Language
English
Abstract
To verify the composition and the chemical variation of its essential oil along 24 hours, leaves of patchouli of medicinal plant collection of the Department of Plant Production/Horticulture of UNESP-BotucatuSP, were collected every three hours during one day (of the 06:00 to 03:00 h) between February, 25 and 26, 2001. The leaves had its oil extracted for hydro-distillation in Clevenger apparatus during three hours with two repetitions.
The chemical composition analysis of the extracted essential oils was carried out in gas chromatography/mass spectroscopy.
The phytochemical profile of the essential oils did not present significant difference in function of the harvest.
The five most abundant were: patchouli alcohol (62.88 to 70.74 %),
-bulnesene (55.12 to 6.84 %), -guaiene (2.87 to 4.25 %), 
-patchoulene (2.66 to 3.52 %) and another sesquiterpene (5.16 to 6.56 %) not identified, with retention time near to the major compounds.
The chemical composition analysis of the extracted essential oils was carried out in gas chromatography/mass spectroscopy.
The phytochemical profile of the essential oils did not present significant difference in function of the harvest.
The five most abundant were: patchouli alcohol (62.88 to 70.74 %),
-bulnesene (55.12 to 6.84 %), -guaiene (2.87 to 4.25 %), -patchoulene (2.66 to 3.52 %) and another sesquiterpene (5.16 to 6.56 %) not identified, with retention time near to the major compounds.
Authors
M.A.S. Silva, P.A.D. Ehlert, L.C. Ming, M.O.M. Marques
Keywords
Daytime variation, essential oil, sesquiterpene, patchouli
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