Comparison of chemical fractionation method and H-1-NMR spectroscopy in measuring the monomer block distribution of algal alginates

Date

2013-05-01

Author

Moral, Cigdem Kivilcimdan
Doğan, Özdemir
Sanin, Faika Dilek

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Alginates are composed of beta-D-mannuronic acid (M) and alpha-L-guluronic acid (G). In this study, block distributions of alginate samples were measured by a chemical fractionation method and H-1-NMR spectroscopy, to compare the usefulness of the two methods. Block distribution results obtained from the two methods were found to be statistically different from each other; the chemical fractionation method gave consistently lower estimates for the amount of homopolymeric blocks. The repeatability of the results was also lower in the chemical fractionation method. By contrast, H-1-NMR spectroscopy was found to be a reproducible and a faster method for determining the distribution of monomeric blocks in alginates.

Subject Keywords

Materials Chemistry, General Chemical Engineering, Polymers and Plastics

URI

https://hdl.handle.net/11511/34799

Collections

Department of Chemistry, Article