A fluorescence study on the gel-to-sol transition of kappa-carrageenan

International Journal of Biological Macromolecules
O Pekcan, O Tari

Abstract

The fluorescence technique was employed to study gel-to-sol transitions in kappa-carrageenan systems with various carrageenan contents. Pyranine was used as a fluorescence probe for monitoring these transitions. Fluorescence, Ip and scattered light, Isc intensities were measured against temperature to determine critical phase transition temperatures and exponents. It was observed that gel-to-sol transition temperatures, Tgs are found to be dependent to the carrageenan content. The measured critical exponents gamma' and beta' were found to be very close to the weight average degree of polymerization, DPw and gel fraction G, exponents (gamma and beta) of the classical Percolation Model.

References

Aug 1, 1988·Physical Review Letters·O PekcanM D Croucher
Nov 24, 1999·International Journal of Biological Macromolecules·I T NortonT J Foster
Mar 5, 2004·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·Demet KayaYaşar Yilmaz

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Citations

Aug 1, 2013·Journal of Fluorescence·Hakan KaygusuzGülşen Akın Evingür
Apr 11, 2014·Soft Matter·Kathirvel Ganesan, Lorenz Ratke

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