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Université de Fribourg

Tracer microrheology of γ-dodecalactone induced gelation of aqueous starch dispersions

Heinemann, Cornelia ; Cardinaux, Frédéric ; Scheffold, Frank ; Schurtenberger, Peter ; Escher, Felix ; Conde-Petit, Béatrice

In: Carbohydrate Polymers, 2004, vol. 55, p. 155-161

We have studied the rheological properties of the natural biopolymer system starch in the presence of the gelation inducing flavor compound γ-dodecalactone. From optical microrheology, based on the multiple scattering of laser light (DWS), we deduce the frequency-dependent moduli G(ω) and G″(ω) of the gelling sample over the full frequency range. Our measurements demonstrate the inherent...