Journal ArticleDOI
A generalization of the retention index system including linear temperature programmed gas-liquid partition chromatography.
H. van Den Dool,P. Dec. Kratz +1 more
TLDR
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.About:
This article is published in Journal of Chromatography A.The article was published on 1963-01-01. It has received 5192 citations till now. The article focuses on the topics: Kovats retention index.read more
Citations
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Gas chromatographic retention indices of monoterpenes and sesquiterpenes on methyl silicon and Carbowax 20M phases
TL;DR: 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.
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Comparative evaluation of 11 essential oils of different origin as functional antioxidants, antiradicals and antimicrobials in foods
Gianni Sacchetti,Silvia Maietti,Mariavittoria Muzzoli,Martina Scaglianti,Stefano Manfredini,Matteo Radice,Renato Bruni +6 more
TL;DR: Eleven essential oils, namely, Cananga odorata (Annonaceae), Cupressus sempervirens (Cupressaceae), Curcuma longa (Zingiberaceae), Cymbopogon citratus (Poaceae), Pinus radiata (Pinaceae), Piper crassinervium (Piperaceae), Psidium guayava (Myrtaceae), Rosmarinus officinalis (Lamiaceae), Thymus x citri
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Use of different methods for testing antioxidative activity of oregano essential oil
TL;DR: In this article, the antioxidant properties of the essential oil from oregano in relation to its chemical composition were examined and the antioxidant activity was investigated with three different methods: the β-carotene bleaching (BCB) test, the 2,2′-diphenyl-1-picrylhydrazyl (DPPH) radical scavenging method and the TBARS assay.
Journal ArticleDOI
Composition and antimicrobial activity of the essential oils of two Origanum species
TL;DR: The essential oils obtained from the aerial parts of Origanum scabrum and Origaum microphyllum exhibited a very interesting antimicrobial profile after they were tested against six Gram-negative and -positive bacteria and three pathogenic fungi.
Analytical, Nutritional and Clinical Methods Use of different methods for testing antioxidative activity of oregano essential oil
TL;DR: In this article, the antioxidant properties of the essential oil from oregano in relation to its chemical composition were examined and the antioxidant activity was investigated with three different methods: the b-carotene bleaching (BCB) test, the 2,2 0 -diphenyl-1-picrylhydrazyl (DPPH) radical scavenging method and the TBARS assay.
References
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Journal ArticleDOI
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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Essential Oils, Treatment of Compositional Data for the Characterization of Essential Oils. Determination of Geographical Origins of Peppermint Oils by Gas Chromatographic Analysis
D. M. Smith,Leo Levi +1 more
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The structural identification of some naturally occurring branched chain fatty aldehydes
TL;DR: Branched chain aldehydes isolated from animal tissues have been shown to belong to either the iso- or anteiso-series of compounds by oxidising them to the corresponding acids and comparing the gas chromatographic behaviour of these acids with that of pure synthetic acids of known structure.
Journal ArticleDOI
A catalog of retention times of a number of organic compounds
TL;DR: In this article, the relative retention times of organic compounds on tri-m -tolyl phosphate and β,β′-oxydipropionitrile columns have been determined and tabulated.
Journal ArticleDOI
The selective separation of high-boiling aromatic compounds
J.W. Sweeting,J.F.K. Wilshire +1 more
TL;DR: In this article, the selective sorption of various aromatic compounds boiling at temperatures up to 350° was studied on a polar phase (Reoplex 400) and a non-polar Apiezon L.