betadex has been researched along with carvone* in 2 studies
2 other study(ies) available for betadex and carvone
| Article | Year |
|---|---|
Enantiomeric analysis of limonene and carvone by direct introduction of aromatic plants into multidimensional gas chromatography.
Analysis of chiral compounds in complex mixtures is achieved by multidimensional gas chromatography using heptakis-(2,3,6-tri-O-methyl)-β-cyclodextrin stationary phase as the main column of the system to separate specific selected cuts containing components unresolved in the first dimension. The proposed procedure allows rapid analysis of both solid and liquid matrices by direct introduction, into the programmed temperature vaporizer (PTV) of a gas chromatograph, of either the plant material or the essential oil, respectively. A comparison between enantiomeric excesses data obtained, from plant leaves (or plant seeds) and the corresponding essential oils, by direct injection (i.e., without sample pretreatment or concentration step) into the multidimensional system is also included. Reported data demonstrate that no racemization occurs during analysis as identical enantiomeric excesses are obtained in both cases for specific chiral compounds. Topics: beta-Cyclodextrins; Carum; Chromatography, Gas; Cyclohexane Monoterpenes; Cyclohexenes; Limonene; Mentha; Monoterpenes; Oils, Volatile; Seeds; Stereoisomerism; Terpenes | 2013 |
Inclusion of carvone enantiomers in cyclomaltoheptaose (beta-cyclodextrin): thermal behaviour and H-->D and D-->H exchange.
The inclusion compounds of carvone enantiomers in cylcomaltoheptaose (beta-cyclodextrin, betaCD) are studied at defined temperatures above room temperature and in relation to H-->D and D-->H exchanges. Loss of water molecules and release of carvone molecules from the betaCD cavity are caused by increase of temperature above room temperature and are measured by the integrated intensities of the O-H and C-H Raman stretching bands, respectively. In turn, H-->D and D-->H exchanges are monitored by the integrated intensities of the O-H and O-D Raman stretching bands, respectively. All of these processes were followed in real time with a Raman spectrometer equipped with CCD detection. The results indicate that distinct carvone enantiomers lead to the formation of different betaCD inclusion hydrates that have different water content and hydration structures. In particular, the results suggest that SCarv-betaCD has a greater water content, dehydrates strongly for temperatures above room temperature, and exchanges protons faster than the RCarv-betaCD complex. Topics: beta-Cyclodextrins; Binding Sites; Cyclodextrins; Cyclohexane Monoterpenes; Deuterium; Hydrogen; Monoterpenes; Spectrum Analysis, Raman; Stereoisomerism; Temperature; Terpenes; Water | 2002 |