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Artículo

Cassava (Manihot esculenta) starch films reinforced with natural fibrous filler

Versino, FlorenciaIcon ; Garcia, Maria AlejandraIcon
Fecha de publicación: 07/2014
Editorial: Elsevier Science
Revista: Industrial Crops and Products
ISSN: 0926-6690
Idioma: Inglés
Tipo de recurso: Artículo publicado
Clasificación temática:
Recubrimientos y Películas; Alimentos y Bebidas

Resumen

The remaining fibrous residue of cassava starch extraction was characterized and used as film filler in order to obtain an enhanced fully biodegradable starch-based composite. Film-forming gelatinized cassava starch suspensions increased significantly their apparent viscosity and storage modulus with filler addition, although no segregation of filler particles was observed. Homogenous films were obtained from 3% w/w cassava starch film-forming suspensions including glycerol as plasticizer and the remaining fibrous residue. Plasticizer concentration was optimized in reinforced starch films. SEM micrographs evidenced that the filler was structurally incorporated in the matrix, although concentrations of 3% led to more heterogeneous surfaces because of the presence of large size filler particles. Reinforced films exhibited UV-barrier capacity and adequate water vapor barrier properties (14.6 ± 0.7 10−11 g/m s Pa) and tensile strength (18.01 ± 0.19 MPa) when 25% w/w glycerol was added as plasticizer. Filler addition reinforced the starch matrix increasing its mechanical resistance: 1.5% residue content increased over 900% the films elastic modulus. Furthermore, the obtained eco-compatible materials could be heat sealed, which indicates their suitability for packaging development. In conclusion, an integral approach to cassava roots use has been proposed, expanding its scope and providing added value to the remaining residue of starch extraction.
Palabras clave: Eco-Compatible Materials , Cassava Starch Films , Natural Fillers , Optical Properties , Water Vapor Permeability , Mechanical Properties
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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/11336/33105
DOI: http://dx.doi.org/10.1016/j.indcrop.2014.04.040
URL: http://www.sciencedirect.com/science/article/pii/S0926669014002556
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Articulos(CIDCA)
Articulos de CENTRO DE INV EN CRIOTECNOLOGIA DE ALIMENTOS (I)
Citación
Versino, Florencia; Garcia, Maria Alejandra; Cassava (Manihot esculenta) starch films reinforced with natural fibrous filler; Elsevier Science; Industrial Crops and Products; 58; 7-2014; 305-314
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