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Reología de derivados de la yema de huevo deshidratada

Rheology of spray-dried egg-yolk produets.
Authors: Miranda, Juan; Guerrero Conejo, Antonio Francisco; Partal López, Pedro;

Reología de derivados de la yema de huevo deshidratada

Abstract

Tanto el proceso de emulsificación como las propiedades reológicas y la estabilidad de una emulsión alimentaria, tipo mayonesa, dependen en gran medida de la microestructura y la reología de la fase continua acuosa, cuyo ingrediente principal es la yema de huevo. Debido a la inestabilidad microbiológica de ésta se hacen necesarios procesos de deshidratación por atomización para conservarla con fines alimentarios. En este trabajo se trata de determinar la influencia que ejerce la deshidratación sobre la microestructura analizando las propiedades reológicas de la yema mediante ensayos reológicos de cizalla oscilatoria, de flujo en estado estacionario y de fluencia viscosa. Se llegó a la conclusión de que la deshidratación produce la desnaturalización de las proteínas provocando un cambio desde un comportamiento tipo fluido (yema nativa) a un comportamiento tipo gel (yema deshidratada reconstituida al 45% en sólidos). Por otro lado, se ha observado una escasa variación de las propiedades viscoelásticas lineales de la yema deshidratada con la temperatura

The emulsification process, as weIl as and the emulsion rheology and stability, greatly depends on the rheological properties of the continuous phase, the most important ingredient of which is yolk. However, since native yolk is not microbiologically stable, processing of yolk, such as spray-drying, is necessary for food applications. The influence of processing by spray-drying on the microstructure and rheological properties of yolk was investigated using oscillatory, creep and steady state flow measurements. The spray-drying process produces denaturation of proteins giving rise to a dramatic change from a fluid-like behaviour, as corresponds to the native yolk, to a gel-like behaviour corresponding to the reconstituted dried yolk (45% solids). Temperature exerts a slight influence on the linear viscoelastic properties of processed yolk

Country
Spain
Related Organizations
Keywords

Reología, Yema de huevo, Viscosity, Viscosidad, Viscoelasticidad, viscosidad, Viscoelasticity, Egg yolk, Rheology

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average