Artículo
Thermal gelation of mixed egg yolk/kappa-carrageenan dispersions
Autor/es | Aguilar García, José Manuel
Cordobés Carmona, Felipe Raymundo, Anabela Guerrero Conejo, Antonio Francisco |
Departamento | Universidad de Sevilla. Departamento de Ingeniería Química |
Fecha de publicación | 2017-04 |
Fecha de depósito | 2023-01-19 |
Publicado en |
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Premios | Premio Mensual Publicación Científica Destacada de la US. Escuela Politécnica Superior |
Resumen | This study aims to evaluate the effect of gum content and pH on the thermal gelation of mixed egg yolk/κ-carrageenan (EY/κC) dispersions, monitored by linear viscoelastic measurements.
Heat processing induces dramatic ... This study aims to evaluate the effect of gum content and pH on the thermal gelation of mixed egg yolk/κ-carrageenan (EY/κC) dispersions, monitored by linear viscoelastic measurements. Heat processing induces dramatic changes in the microstructure and viscoelastic properties of EY/κC systems, which may be attributed to a multistage mechanism that yields an interparticle gel network. An increase in κC content generally induces an enhancement in viscoelasticity. A reduction in pH hinders this enhancement and causes an anticipation of the multistage process, which confirms the importance of the electrostatic interactions of EY/κC dispersions. The viscoelastic properties of EY/κC gels generally fit a master mechanical spectrum, which suggests that the protein matrix generally dominates the microstructure of EY/κC gels. However, SEM images reveal formation of a κC network at low pH, at which some κC autohydrolysis may also play a role. Electrostatic attractions seem to favour interactions among EY aggregates and κC into the carrageenan network. |
Agencias financiadoras | Spanish MEC ref. TME2008-01144 |
Identificador del proyecto | TME2008-01144 |
Cita | Aguilar García, J.M., Cordobés Carmona, F., Raymundo, A. y Guerrero Conejo, A.F. (2017). Thermal gelation of mixed egg yolk/kappa-carrageenan dispersions. Carbohydrate Polymers, 161 (April), 172-180. https://doi.org/10.1016/j.carbpol.2017.01.001. |
Ficheros | Tamaño | Formato | Ver | Descripción |
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CP_aguilar-garcia_2017_Thermal.pdf | 1.324Mb | [PDF] | Ver/ | |