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Studies on the behaviour of α-, β- and γ-cyclodextrins and some derivatives under reversed-phase liquid Chromatographic conditions

✍ Scribed by A. Bielejewska; M. Kożbiał; R. Nowakowski; K. Duszczyk; D. Sybilska

Publisher: Elsevier Science
Year: 1995
Tongue: English
Weight: 448 KB
Volume: 300
Category: Article
ISSN: 0003-2670
DOI: 10.1016/0003-2670(94)00419-m

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✦ Synopsis

The separation processes of (Y-, /3-and y-cyclodextrins and their various methyl derivatives have been investigated with Knauer polarimetric (Chiralyser) and retractive index (RI) detectors. RP18 and RR8 hydrocarbon packings and an NH2 bonded phase were applied as stationary phases. Aqueous methanolic or ethanolic solutions were used as mobile phases. It has been found that the Chiralyser detector response is approximately linear at low concentrations of solutes and that its detection capabilities are about 40 times better than those of the RI detector. Differences in the order of elution of (Y-, & and r_cyclodextrins have been observed for various stationary phases as well as for various mobile phase compositions. The optimal conditions for analytical determinations of cyclodextrins and their derivatives have been discussed.

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Spectroscopic and thermal studies on the inclusion of trans-cinnamic acid and a number of its hydroxyl-derivatives with α, β and γ-cyclodextrins molecules

✍ Mariela M. Nolasco; Ana M. Amado; Paulo J. A. Ribeiro-Claro 📂 Article 📅 2009 🏛 John Wiley and Sons 🌐 English ⚖ 294 KB

## Abstract The inclusion compounds of α‐, β‐ and γ‐cyclodextrins (α‐CD, β‐CD and γ‐CD) with __trans__‐cinnamic acid (t‐CIA), 3‐hydroxy‐__trans__‐cinnamic acid (t‐3OHCIA), 4‐hydroxy‐__trans__‐cinnamic acid (t‐4OHCIA) and 3,4‐dihydroxy‐__trans__‐cinnamic acid (t‐3,4OHCIA) were prepared and character