Películas biodegradables y comestibles desarrolladas en base a aislado de proteínas de suero lácteo : estudio de dos métodos de elaboración y del uso de sorbato de potasio como conservador

Authors

  • Daniela Escobar Gerencia de Proyectos Alimentarios, Laboratorio Tecnológico del Uruguay (LATU), Uruguay
  • Angelina Sala Universidad Católica del Uruguay, Dámaso Antonio Larrañaga (UCU), Uruguay
  • Carlos Silvera Facultad de Ingenieria Universidad Católica del Uruguay (UCU), Uruguay
  • Rodrigo Harsipe Alimentos RH, Uruguay
  • Rosa Márquez Gerencia de Proyectos Alimentarios, Laboratorio Tecnológico del Uruguay (LATU), Uruguay

DOI:

https://doi.org/10.26461/04.07

Abstract

The films were made from whey protein isolate (WPI) solutions using glycerol as plasticizer and with or without the use of potassium sorbate as antimicrobial. The methods used were compression molding at 140 ºC and 1 MPa and the casting method at 23º C and 55 % of humidity. The compression molding method has the advantage of involving less time and uncertainty for the film forming than the casting method. On the other hand, it improves the mechanical properties bringing  films with higher tensile strength and elongation, and less water vapor permeability and solubility.
Keywords: Compression molding, casting, force, tensile strength, elongation, elastic modulus.

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How to Cite

Películas biodegradables y comestibles desarrolladas en base a aislado de proteínas de suero lácteo : estudio de dos métodos de elaboración y del uso de sorbato de potasio como conservador. (2011). INNOTEC, 4 ene-dic, 33-36. https://doi.org/10.26461/04.07

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