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    The Influence of Halide-Mediated Oxidation on Algae-Born Adhesives

    Year: 2007

    Journal: Macromol. Biosci. 2007, 7, 1280–1289, 20100827

    Authors: Bitton R., Berglin M, Elwing H., Colin C., Delage L., Potin P., Bianco-Peled H. *

    Last authors: Havazelet Bianco-Peled

    Organizations: R. Bitton Inter-Departmental program for Biotechnology, Technion-Israel Institute of Technology, Israel M. Berglin, H. Elwing Cell and Molecular Biology, Interface Biophysics, Goteborg University, Box 462, SE-405 30 Sweden C. Colin, L. Delage, P. Potin Marine plants and biomolecules, Unite´ Mixte de Recherche 7139 CNRS/Universite´ Pierre et Marie Curie-Paris6 & LIA-DIAMS, Station Biologique, BP 74, F-29682 Roscoff Cedex, France H. Bianco-Peled Department of Chemical Engineering Technion-Israel Institute of Technology, Israel

    Country: Israel

    Adhesive materials extracted from the brown algae Fucus Serratus were studied. These adhesives are composed of cross-linked alginate and polyphenols oxidized in the presence of KI or KBr. All formulations were capable of adhering to a variety of surfaces, however the adhesion properties were influenced by the halide used. SAXS and TEM experiments revealed that oxidized polyphenols self-assemble into chain-like objects, irrespective of the oxidation conditions. Yet, slight differences in the aggregate size were detected. QCM-D results showed
    that the kinetics of the oxidation was faster with iodide than with bromide. Moreover, oxidation with iodide generates stiffer networks, suggesting that the interaction between the alginate and the polyphenol could be the cause of the reduced adhesion.