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Influence of DNA, Alginate, Lysozyme and Bovine Serum Albumin on Sodium Silicate Condensation

Published online by Cambridge University Press:  01 February 2011

Thibaud Coradin
Affiliation:
Laboratoire de Chimie de la Matière Condensée, CNRS-UMR 7574, UPMC, F-75252 Paris cedex 05, France.
Aurélie Coupé
Affiliation:
Laboratoire de Chimie de la Matière Condensée, CNRS-UMR 7574, UPMC, F-75252 Paris cedex 05, France.
Jacques Livage
Affiliation:
Laboratoire de Chimie de la Matière Condensée, CNRS-UMR 7574, UPMC, F-75252 Paris cedex 05, France.
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Abstract

The interaction of DNA, alginate, Lysozyme and Bovine Serum Albumin with diluted solutions of sodium silicate was studied using the molybdosilicate method. DNA and alginate showed very weak interactions with silica precursors whereas both proteins were able to form silica gels. Both electrostatic interactions and hydrogen bonds are suggested to arise between peptide chain and polysilicates, bringing new informations on the nature of inorganic and bio-organic species involved in the natural biosilicification processes.

Type
Research Article
Copyright
Copyright © Materials Research Society 2002

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