Journal
JOURNAL OF DISPERSION SCIENCE AND TECHNOLOGY
Volume 36, Issue 1, Pages 18-27Publisher
TAYLOR & FRANCIS INC
DOI: 10.1080/01932691.2014.884465
Keywords
Carmoisine dye; conventional cationic surfactants; differential spectroscopic method; hydrophobic head group; organized assemblies
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Funding
- University of Gujrat, Pakistan
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The present study describes the extent of interactions of an efficient food dye, Carmoisine (CAR), with conventional cationic surfactants, hexadecyltrimethylammonium bromide, and ethylhexade-cyldimethylammonium bromide (EHDAB). The study was carried out by quantifying the spectral changes of CAR as a function of premicellar to postmicellar surfactant concentrations at various pH conditions. The quantification of CAR molecules entrapped by cationic micellar systems has been estimated with the help of mathematical models. Binding parameters of each surfactant were calculated using differential spectroscopic method. The enhanced solubilization of dye by switching the pH was observed. In support of the electrostatic forces, the larger and more hydrophobic head group favors the promising solubilization of CAR in the outer region of the micellar interior. These findings extend the proficiency of dye molecule as a reporter for sensing electrostatic environment in lipidic membranes and related organized assemblies.
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