study of composition and yield of thymus vulgaris l. oil essential /
estudo da composição e do rendimento do óleo essencial de tomilho (thymus vulgaris l.)

Clicks: 122
ID: 237265
2010
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Abstract
The essential oil yield and quality on aromatic species is regulated by environmental conditions and vegetative development. The objective of this work was to evaluate the yield and composition of Thymus vulgaris L. essential oil from nearby Curitiba, PR. The essential oil was obtained from aerial fresh plants by hydrodistillation. The extraction was done during 1, 2 and 3h. The components identification was performed by gas chromatography/mass spectrometry (GC/MS) and for quantification the equipment used was a gas chromatography with flame detector (GC/MS). There were identified and quantified thirty three components. The majority components were thymol, carvacrol and borneol. The best oil yield of 1.86% for fresh plants with aerial parts was obtained when used extraction time of 3h, however, no significant differences were found on components concentration for all the three extraction times.

Embora extraído de uma mesma espécie vegetal, o rendimento e a composição química de um óleo essencial pode variar, significativamente, dependendo de fatores como a época de coleta, condições climáticas e de solo. Neste trabalho foram estudados o rendimento e a composição do óleo essencial de tomilho Thymus vulgaris L. cultivados na região de Curitiba – PR. O método de hidrodestilação em aparelho de Clevenger foi utilizado para a extração do óleo essencial das partes aéreas da planta fresca nos tempos de 1, 2 e 3 h. A identificação e a quantificação dos compostos foram efetuadas através de cromatografia gasosa e espectrometria de massas. Um total de 33 compostos foram identificados e quantificados. Dentre estes os majoritários foram timol, p-cimeno, carvacrol, ?-terpineno, linalol e borneol. O melhor tempo de extração para o rendimento do óleo essencial foi de 3 h.

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deschamps2010semina:study Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors ;Cícero Deschamps;Carlos Itsuo Yamamoto;Lilian Cristina Côcco;Juarez Souza de Oliveira;Agnes de Paula Scheer;Elizabete Aparecida Ruzza Jakiemiu
Journal frontiers in neuroendocrinology
Year 2010
DOI
10.5433/1679-0359.2010v31n3p683
URL
http://www.uel.br/revistas/uel/index.php/semagrarias/article/view/6513
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