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Artículo

Use of Residual Yeast Cell Wall for New Biobased Materials Production: Effect of Plasticization on Film Properties

Peltzer, Mercedes AnaIcon ; Salvay, A.G.; Delgado, Juan FranciscoIcon ; de la Osa, Orlando; Wagner, Jorge RicardoIcon
Fecha de publicación: 11/2018
Editorial: Springer
Revista: Food and Bioprocess Technology
ISSN: 1935-5130
Idioma: Inglés
Tipo de recurso: Artículo publicado
Clasificación temática:
Recubrimientos y Películas

Resumen

The use of renewable resources to develop food contact materials, such as proteins or polysaccharides, and the use of industrial residues for alternative applications are trending topics for researchers and the industry. Yeast cell wall (YCW) is a very rich waste from the yeast extract industry. Due to this, the aim of this work is to develop new biodegradable films based on residual YCW and the study of the effect of plasticization on films properties. Residual YCW was used as base matrix and different concentrations of glycerol (0, 15, 25 and 35 wt%) were tested to obtain casted films. Homogeneous and yellow-brownish films, which allow seeing through them, were obtained from the YCW. Total soluble matter demonstrated that glycerol enhanced solubility of films but glycerol was retained in the polymer matrix. TGA studies indicated that YCW films exhibited substantial degradation at temperatures above 180 °C. FTIR spectra of the casted films were representative of yeast cell wall material and SEM photographs showed that cell wall maintained their shape after film formation. As expected, Young’s modulus and tensile strength values were decreased with the increasing amount of glycerol. However, elongation at break was not increased further with higher concentration of plasticizer and the addition of 15 wt% of glycerol seemed to be enough to improve mechanical properties. The linear increment of water vapour permeability with glycerol concentration was produced by the increase in water solubility in the film. Therefore, based on solubility in water, mechanical, and barrier properties, it is possible to propose yeast cells residues as film-forming material for biodegradable film developments.
Palabras clave: BIODEGRADABLE FILMS , CHARACTERIZATION , INDUSTRIAL RESIDUES , PLASTICIZATION , WATER VAPOUR PERMEABILITY , YEAST CELL WALL
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info:eu-repo/semantics/openAccess Excepto donde se diga explícitamente, este item se publica bajo la siguiente descripción: Creative Commons Attribution-NonCommercial-ShareAlike 2.5 Unported (CC BY-NC-SA 2.5)
Identificadores
URI: http://hdl.handle.net/11336/98853
URL: http://link.springer.com/10.1007/s11947-018-2156-8
DOI: http://dx.doi.org/10.1007/s11947-018-2156-8
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Articulos(SEDE CENTRAL)
Articulos de SEDE CENTRAL
Citación
Peltzer, Mercedes Ana; Salvay, A.G.; Delgado, Juan Francisco; de la Osa, Orlando; Wagner, Jorge Ricardo; Use of Residual Yeast Cell Wall for New Biobased Materials Production: Effect of Plasticization on Film Properties; Springer; Food and Bioprocess Technology; 11; 11; 11-2018; 1995-2007
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