Artículo
Development and Characterization of Edible Films Based on Cassava Starch Modified by Corona Treatment
Autor/es | Otalora González, Carlos Mauricio
Félix Ángel, Manuel Bengoechea Ruiz, Carlos Flores, Silvia Gerschenson, Lia Noemi |
Departamento | Universidad de Sevilla. Departamento de Ingeniería Química |
Fecha de publicación | 2024-02 |
Fecha de depósito | 2024-05-10 |
Resumen | Corona treatment (CT), a surface treatment widely used in the plastic industry, can be used to alter the properties of cassava starch. In the present work, CT was performed on dry granular starch (DS), water-suspended humid ... Corona treatment (CT), a surface treatment widely used in the plastic industry, can be used to alter the properties of cassava starch. In the present work, CT was performed on dry granular starch (DS), water-suspended humid granular starch (HS), and gelatinized starch (GS). Different properties and structural characteristics of treated starches were studied. A lowering in pH was generally observed after CT and the rheological properties depended on the starch presentation. A reinforcement of DS and HS samples after CT was deduced from higher viscosity values in flow assays and viscoelastic moduli, but weak gels were obtained when CT was applied to GS. Changes in the A-type polymorphic structure, as well as a drop in relative crystallinity, were produced by CT for DS and HS. Additionally, changes in O-H and C-O-C FTIR bands were observed. Therefore, CT can be applied for starch modification, producing predominantly cross-linking in the DS and de-polymerization in the HS. Casting films made from the modified DS showed higher tensile strength and lower hydrophilicity, solubility, water absorption capacity, and water vapor permeability. Thus, the DS cross-linking induced by CT improved mechanical characteristics and hydrophobicity in edible films, which can be better used as packaging materials. |
Agencias financiadoras | Ministerio de Ciencia e Innovación (MICIN). España European Commission (EC). Fondo Europeo de Desarrollo Regional (FEDER) Universidad de Buenos Aires Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET). Argentina Agencia Nacional de Promoción Científica y Tecnológica. Argentina |
Identificador del proyecto | PID2021-124294OB-C21
20020130100550BA 20020170100229BA 11220120100507 11220210100712 PICT 2015-2109 PICT 2017-1146 PICT 2019-1842 |
Ficheros | Tamaño | Formato | Ver | Descripción |
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F_felix-angel_2024_development.pdf | 4.425Mb | [PDF] | Ver/ | |