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000867575 1001_ $$00000-0003-1542-4853$$aBanc, Amélie$$b0
000867575 245__ $$aPhase separation dynamics of gluten protein mixtures
000867575 260__ $$aLondon$$bRoyal Soc. of Chemistry$$c2019
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000867575 520__ $$aWe investigate by time-resolved synchrotron ultra-small X-ray scattering the dynamics of liquid–liquid phase-separation (LLPS) of gluten protein suspensions following a temperature quench. Samples at a fixed concentration (237 mg ml−1) but with different protein compositions are investigated. In our experimental conditions, we show that fluid viscoelastic samples depleted in polymeric glutenin phase-separate following a spinodal decomposition process. We quantitatively probe the late stage coarsening that results from a competition between thermodynamics that speeds up the coarsening rate as the quench depth increases and transport that slows down the rate. For even deeper quenches, the even higher viscoelasticity of the continuous phase leads to a “quasi” arrested phase separation. Anomalous phase-separation dynamics is by contrast measured for a gel sample rich in glutenin, due to elastic constraints. This work illustrates the role of viscoelasticity in the dynamics of LLPS in protein dispersions.
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000867575 7001_ $$0P:(DE-HGF)0$$aPincemaille, Justine$$b1
000867575 7001_ $$00000-0003-1780-389X$$aCostanzo, Salvatore$$b2
000867575 7001_ $$0P:(DE-HGF)0$$aChauveau, Edouard$$b3
000867575 7001_ $$0P:(DE-Juel1)130507$$aAppavou, Marie-Sousai$$b4
000867575 7001_ $$0P:(DE-HGF)0$$aMorel, Marie-Hélène$$b5
000867575 7001_ $$00000-0002-6455-8447$$aMenut, Paul$$b6
000867575 7001_ $$00000-0003-2859-5133$$aRamos, Laurence$$b7$$eCorresponding author
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