2015
DOI: 10.1016/j.carbpol.2014.10.040
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Mechanical and optical characterization of gelled matrices during storage

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Cited by 15 publications
(5 citation statements)
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“…This could be due to a phenomenon of phase separation with the formation of a zone enriched in -carrageenan and thus an increase of C P in this area. The phenomenon of incompatibility between the polysaccharides when one of the components is gelling agent can cause dramatic changes in properties of gels, including a strengthening modulus and a decrease of critical gelation (Lorenzo, Zaritzky, & Califano, 2015;Zasypkin, Braudo, & Tolstoguzov, 1997), as was observed for blends in this study. The gelation temperatures of mixtures were similar regardless of the concentration of -carrageenan and the molecular weight of starch (due to different hydrolysis time).…”
Section: Viscoelastic Properties Of Gels At 20 • Cmentioning
confidence: 61%
“…This could be due to a phenomenon of phase separation with the formation of a zone enriched in -carrageenan and thus an increase of C P in this area. The phenomenon of incompatibility between the polysaccharides when one of the components is gelling agent can cause dramatic changes in properties of gels, including a strengthening modulus and a decrease of critical gelation (Lorenzo, Zaritzky, & Califano, 2015;Zasypkin, Braudo, & Tolstoguzov, 1997), as was observed for blends in this study. The gelation temperatures of mixtures were similar regardless of the concentration of -carrageenan and the molecular weight of starch (due to different hydrolysis time).…”
Section: Viscoelastic Properties Of Gels At 20 • Cmentioning
confidence: 61%
“…As known, the occurrence of important transmission variation at the bottom and the top of the spectra indicates particle migration phenomena (clarification, sedimentation or creaming), while variations in the middle are related to changes in particle sizes [45]. According to Lorenzo et al [46] this method was able to detect, at an early stage, the occurrence of different structural changes long before they could be observed by the naked-eye.…”
Section: Optical Characterizationmentioning
confidence: 99%
“…Es importante resaltar que la gran mayoría de los materiales viscoelásticos en los que se incluyen los materiales biológicos, como los alimentos, no se relajan con una velocidad uniforme, sino que lo hacen en distintas etapas con tiempos de relajación diferentes (Dzadz et al 2015;Lorenzo et al 2015). Cuando una carga constante se aplica a los materiales alimenticios, se pueden observar diferentes comportamientos de relajación y propiedades viscoelásticas.…”
Section: -416unclassified
“…Incluye un número de sensaciones físicas diferentes, por lo cual es más conveniente utilizar el término parámetros texturales (Foegeding et al 2011;Akwetey y Knipe 2012), que es un grupo de características físicas que dependen de los elementos estructurales del material y se relacionan con la deformación, desintegración y flujo por la aplicación de una fuerza. Los parámetros texturales se miden objetivamente como una función de masa, tiempo y distancia (Paula y ContiSilva 2014;Lorenzo et al 2015). De acuerdo con Szczesniak (2002), la textura es el conjunto de los atributos mecánicos, geométricos y de superficie de un producto que es perceptible por medio de receptores mecánicos, táctiles, visuales y auditivos.…”
Section: Introductionunclassified