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Role of curcumin on the determination of the critical micellar concentration by absorbance, fluorescence and fluorescence anisotropy techniques

Paper ID Volume ID Publish Year Pages File Format Full-Text
29501 44415 2012 7 PDF Available
Title
Role of curcumin on the determination of the critical micellar concentration by absorbance, fluorescence and fluorescence anisotropy techniques
Abstract

Curcumin (C21H20O6) is a natural antioxidant which has a wide range of physiological and pharmacological actions. Here, first time this is employed for the determination of the critical micellar concentration (cmc) of both ionic and nonionic surfactants using the measurements of UV absorption, fluorescence spectroscopy and fluorescence polarization anisotropy. Results on a number of surfactants have agreed with those evaluated from conductometric, tensiometric and calorimetric methods. The absorbance and fluorescence intensities of curcumin are enhanced by different micellar solutions. The profiles of the absorbance and fluorescence intensities as a function of concentration of surfactant can be described by sigmoidal function to evaluate the cmc of the studied amphiphiles. However, we have found that some of the anisotropy profiles are sigmoidal in nature.

Graphical abstractFigure optionsDownload full-size imageDownload as PowerPoint slideHighlights► The cmc of a surfactant can be determined by various methods. ► Spectroscopic methods are applied for the determination of cmc using probes. ► Curcumin is used as a probe to determine the cmc of surfactants spectroscopically. ► Absorbance, fluorescence and anisotropy of curcumin are studied to evaluate cmc. ► These methods can be convenient techniques for the determination of cmc.

Keywords
Curcumin; Cmc; UV-absorption; Fluorescence; Anisotropy; Sigmoidal–Boltzmann equation
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Role of curcumin on the determination of the critical micellar concentration by absorbance, fluorescence and fluorescence anisotropy techniques
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Publisher
Database: Elsevier - ScienceDirect
Journal: Journal of Photochemistry and Photobiology B: Biology - Volume 115, 3 October 2012, Pages 9–15
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us