نتایج جستجو برای: sulfated β cyclodextrin

تعداد نتایج: 185814  

Journal: :Journal of Inclusion Phenomena and Macrocyclic Chemistry 2021

A simple and cost-effective method for the synthesis of sulfated β-cyclodextrin, one most widely used chiral mobile phase additives, using sulfamic acid as a sulfonating agent has been described. The was optimized, synthesized product characterized by spectroscopic, size-exclusion chromatographic, thermal, microscopic methods compared to marketed Sigma Aldrich β-cyclodextrin. β-Cyclodextrin, hy...

Journal: :Analytical sciences : the international journal of the Japan Society for Analytical Chemistry 2010
Ruijuan Yuan Yan Wang Guosheng Ding

A sulfated poly β-cyclodextrin (SPCD) modified silica-based monolithic column was prepared for enantiomeric separation. First, 2-hydroxy-3-allyloxy-propyl-β-cyclodextrin (allyl-β-CD) was bonded onto a bifunctional reagent 3-(methacryloxy)propyltriethoxysilane (γ-MAPS) modified silica-based monolith through radical polymerization; the column was then sulfated with chlorosulfonic acid. The SPCD c...

Journal: :Electrophoresis 2002
Michael A Rodriguez Ying Liu Ryan McCulla William S Jenks Daniel W Armstrong

Forty-one chiral sulfoxides and sulfinate esters were separated using sulfated beta-cyclodextrin and carboxymethyl beta-cyclodextrin as chiral selectors. Binding constants of some analytes to both chiral selectors were measured in order to examine and help explain the observed migration behavior and enantioselectivity trends. Overall, sulfated beta-cyclodextrin separated a greater number of com...

Journal: :The Analyst 1998
R M Sutton S R Gratz A M Stalcup

Capillary electrophoresis (CE) was used to optimize the buffer pH, ionic strength and sulfated cyclodextrin concentrations for enantiomeric separation of piperoxan. These enantioseparation conditions were then applied to a classical gel electrophoresis system. Binding constants of the sulfated beta-cyclodextrin-piperoxan couple were approximated using CE and the effects of organic solvents on t...

Journal: :international journal of bio-inorganic hybrid nanomaterials 0

the purpose of this study was to produce oil in water nano-emulsion by ultrasonication, and investigate the influence of inulin and β-cyclodextrin on the prosperities of nano-emulsion and morphology of spray dried microcapsules. the results showed that emulsion droplet size in samples containing β-cyclodextrin (8.28±0.11 nm) was less than inulin samples (97.12±4.2 nm). considering sem photos, β...

The purpose of this study was to produce oil in water Nano-emulsion by ultrasonication, and investigate the influence of Inulin and β-cyclodextrin on the prosperities of Nano-emulsion and morphology of spray dried microcapsules. The results showed that emulsion droplet size in samples containing β-cyclodextrin (8.28±0.11 nm) was less than Inulin samples (97.12±4.2 nm). Considering SEM photos, β...

The purpose of this study was to produce oil in water Nano-emulsion by ultrasonication, and investigate the influence of Inulin and β-cyclodextrin on the prosperities of Nano-emulsion and morphology of spray dried microcapsules. The results showed that emulsion droplet size in samples containing β-cyclodextrin (8.28±0.11 nm) was less than Inulin samples (97.12±4.2 nm). Considering SEM photos, β...

A. F. Ismail M. A. Aroon T. Matsuura

In this paper, synthesized (raw) multi-walled carbon nanotube (rMWCNTs) surfaces were modified with chitosan and β-cyclodextrin using Chen’s soft cutting technique. Raw and surface modified multi-walled carbon nanotubes were observed by transmission electron microscope (TEM). The results showed that chitosan and β-cyclodextrin could attach to the outer surface of nanotubes, wrapping the nanotub...

Journal: :Polish Journal of Chemical Technology 2023

Abstract Hydroxycitronellal has been widely used in foods, beverages, perfumery and cosmetics. It can also be to treat anxiety. The major drawbacks regarding the use of hydroxycitronellal are related water insolubility, volatility, instability, sensitization. To overcome these concerns, β-cyclodextrin was adopted as wall material encapsulate this work. Hydroxycitronellal-β-cyclodextrin inclusio...

2012
S. Flor V. Tripodi M. Contin C. Dobrecky

Heparin (Hep) is a linear sulfated polysaccharide used in clinical treatment of tromboembolic diseases. In 2008, contaminated batches of Hep appeared in the pharmaceutical market. The contaminant was identified as an over sulfated form of chondroitin sulfate (oversulfated chondroitin sulfate, OSCS). Different analytical methods have been developed to identify and quantify OSCS and other impurit...

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