Additives gamma cyclodextrin

However, if the dye is of an appropriate size to form a one host-two guests complex with beta or gamma cyclodextrin, it was found that, on addition of the cyclodextrin, dye solutions often show spectral changes... 

Lisuride bulk substance Acidic electrolyte with the addition of gamma-cyclodextrin (y-CD) FSCE [206]... 

G.A. Petkova, V. Krai, Chiral switch of enzymatic ketone reduction by addition of gamma-cyclodextrin, Biooi. Med. Chem. 18 (2010) 6651-6656. 

Apart from the Chirasil-L-Val method, sarin enantiomers were also separated by a two-dimensional GC technique on chiral Cyclodex B material prior to NPD monitoring (Spruit et al., 2000,2001). Additional GC-based approaches allowed baseline separation of cyclosarin enantiomers on a GAMMA DEX column monitored by EI-MS (Reiter et al., 2007), separation of VX stereoisomers on hydrodex-p-TBDAc (p-cyclodextrin Reiter et al., 2008), and separation of tabun enantiomers on BetaDex 225 coupled to APCI-MS (Tenberken et al., 2010). VX enantiomers were also chromatographed on a Chiracel OD column by LC coupled to an electrochemical detector, yielding a lower limit of quantification of about lOng/mL blood (Van der Schans et al., 2003). Another LC method coupled with MS/MS detection for VX made use of CHIRALCEL OD-H and CHIRAL AGP columns (Reiter et al., 2008). 

Cyclodextrins (alpha, beta, and gamma) were shown to be potential stabilizers for O/W/O emulsions (Yu et al., 1999,2003). The advantages of the cyclodextrins are their ability to complex with certain oil components at the oil/water interface, resulting in no need for additional surfactant. It appears that the stabilizer efficacy depends on the nature of the oil and the type of the cyclodextrin (alpha > beta > gamma). The presence of any active matter in the inner phase (e.g., benzophenone) destabilized the emulsion. The reason is the interfacial interaction between the components present at the interface allows a possible competition between the lipophilic entrapped molecules and the oil fatty acid residues to enter the cyclodextrin cavity. These formulations prepared with a-cyclodextrin may serve to entrap high-molecular weight-active molecules, since they are not able to enter the small cavity of the a-cyclodextrin molecules and thus cannot destabilize the interface. 

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