Journal ArticleDOI
Gas chromatographic retention indices of monoterpenes and sesquiterpenes on methyl silicon and Carbowax 20M phases
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TLDR
In this article, some 900 Kovats' indices of 400 individual compounds on methyl silicone (dimethyl polysiloxane) and/or Carbowax 20M liquid phases are summarized from the general literature.About:
This article is published in Journal of Chromatography A.The article was published on 1990-01-01. It has received 2118 citations till now. The article focuses on the topics: Kovats retention index.read more
Citations
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Linalol‐rich essential oil of Zataria multiflora Boiss. (Lamiaceae)
TL;DR: The detailed composition of distilled bud and flower-bearing tops of Zataria multiflora was investigated by several analytical techniques (GC, GC-MS, FT-IR, 1H- and 13C-NMR) as mentioned in this paper.
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Chemical composition of the essential oil of five Iranian Nepeta species (N. crispa, N. mahanensis, N. ispahanica, N. eremophila and N. rivularis)
TL;DR: In this article, the essential oils from aerial parts of Nepeta crispa and N. ispahanica were obtained by hydro-distillation and analyzed by capillary gas chromatography, using flame ionization and mass spectrometric detection.
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Chemical composition and antimicrobial activity of the essential oil from aerial parts of Micromeria fruticulosa (Bertol.) Grande (Lamiaceae) growing wild in Southern Italy
Carmen Formisano,Enrico Mignola,Daniela Rigano,Felice Senatore,Gabriella Bellone,Maurizio Bruno,Sergio Rosselli +6 more
TL;DR: The essential oil of aerial parts of Micromeria fruticulosa (Lamiaceae) growing wild in Southern Italy was obtained by hydrodistillation and analyzed by GC and GC-MS.
Journal ArticleDOI
Supercritical fluid extraction from Syzygium aromaticum buds: Phase equilibrium, mathematical modeling and antimicrobial activity
Rodrigo Scopel,Manuel A. Falcão,Aline Machado Lucas,Rafael Nolibos Almeida,Paulo Henrique Konat Gandolfi,Eduardo Cassel,Rubem M. F. Vargas +6 more
TL;DR: In this article, the authors studied the extraction kinetics for predicting operational condition to obtain Syzygium aromaticum essential oil using CO2 as solvent by means of the introduction of thermodynamic approach into the mathematical modeling of the process.
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Chemical composition and antibacterial activity of the essential oil of Cordia verbenacea from the Venezuelan Andes.
Gina Meccia,Luis B. Rojas,Judith Velasco,Tulia Díaz,Alfredo Usubillaga,Juan Carmona Arzola,Sulymar Ramos +6 more
TL;DR: The essential oil of Cordia verbenacea D.C. (Boraginaceae) that grows in Mérida-Venezuela was obtained by hydrodistillation from the aerial parts of the plant, yielding 0.21%.
References
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A generalization of the retention index system including linear temperature programmed gas-liquid partition chromatography.
H. van Den Dool,P. Dec. Kratz +1 more
TL;DR: The equation given by Kovats for the calculation of the retention index in case of isothermal operation is transformed to a more general form to include also the case of linear temperature programmed operation and gives the same retention index for both ways of operation.
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Gas‐chromatographische Charakterisierung organischer Verbindungen. Teil 1: Retentionsindices aliphatischer Halogenide, Alkohole, Aldehyde und Ketone
TL;DR: In this article, a simple relation exists between the retention index of a compound on a non-polar stationary phase and its boiling point, which is defined as the ratio of the boiling point of the compound to its retention index.
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The identification of sesquiterpene hydrocarbons from gas-liquid chromatography retention data
TL;DR: In this article, the identification of sesquiterpenes by gas-liquid chromatography was evaluated, and the most reproducible form of GLC data was found to be the SESQUERPene data.