Influencia del pH en la estabilidad de emulsiones elaboradas con proteínas de salvado de arroz

Authors

  • Laura Maldonado Departamento de Ciencia y Tecnología de Alimentos. Facultad de Química. Universidad de la República, Uruguay
  • Karina Latorre Departamento de Ciencia y Tecnología de Alimentos. Facultad de Química. Universidad de la República, Uruguay
  • Paula Rocha Departamento de Ciencia y Tecnología de Alimentos. Facultad de Química. Universidad de la República, Uruguay
  • Alejandra Medrano Departamento de Ciencia y Tecnología de Alimentos. Facultad de Química. Universidad de la República, Uruguay
  • Cecilia Abirached Departamento de Ciencia y Tecnología de Alimentos. Facultad de Química. Universidad de la República, Uruguay
  • Luis Alberto Panizzolo Departamento de Ciencia y Tecnología de Alimentos. Facultad de Química. Universidad de la República, Uruguay

DOI:

https://doi.org/10.26461/06.06

Keywords:

Cinética, desestabilización, cremado, floculación, coalescencia

Abstract

While animal protein in many instances may have better functional characteristics than vegetable proteins, their increasing cost may favour the expansive use of plant proteins as a replacement. One of the sources of plant protein is rice bran, which is obtained as a byproduct in the polishing process of integral rice (Oryza Santivan L) to produce white rice. The processes of creaming, flocculation and coalescence of emulsions prepared with rice bran protein at pH 6,0 and 8,0, were studied. The obtaining of proteins from defatted rice bran was carried out in an alkaline environment. The process of destabilization of the emulsions was analyzed from data obtained by the method of backscattering of light by a Turbiscan 2000 equipment, in the case of creaming process the data fitted to a biphasic kinetics with a second order component (hyperbolic) and the other component with a sigmoidal behaviour. Emulsions prepared at pH 8 showed a higher stability against creaming while flocculation and coalescence processes were not influenced by different pH values.

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References

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How to Cite

Maldonado, L., Latorre, K., Rocha, P., Medrano, A., Abirached, C., & Panizzolo, L. A. (2011). Influencia del pH en la estabilidad de emulsiones elaboradas con proteínas de salvado de arroz. INNOTEC, (6 ene-dic), 28–31. https://doi.org/10.26461/06.06

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