Physicochemical properties of films based on bovine gelatin cross-linked with 1,4-butanediol diglycidyl ether
The effectiveness of 1,4-butanediol diglycidyl ether (BDDGE) as a cross-linking agent of bovine gelatin films plasticized with D-sorbitol intended for food packaging is reported. Free-standing films were produced by casting gelatin film-forming solutions containing D-soritol 30 % (g/100 g dry gelati...
| Autores: | , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2015 |
| País: | Argentina |
| Institución: | Consejo Nacional de Investigaciones Científicas y Técnicas |
| Repositorio: | CONICET Digital (CONICET) |
| Idioma: | inglés |
| OAI Identifier: | oai:ri.conicet.gov.ar:11336/10123 |
| Acceso en línea: | http://hdl.handle.net/11336/10123 |
| Access Level: | acceso abierto |
| Palabra clave: | Gelatin Films 1,4-Butanediol Diglycidyl Ether Cross-Linking Functional Properties Quantification of Residual Cross-Linking Agent https://purl.org/becyt/ford/2.5 https://purl.org/becyt/ford/2 https://purl.org/becyt/ford/1.4 https://purl.org/becyt/ford/1 |
| Sumario: | The effectiveness of 1,4-butanediol diglycidyl ether (BDDGE) as a cross-linking agent of bovine gelatin films plasticized with D-sorbitol intended for food packaging is reported. Free-standing films were produced by casting gelatin film-forming solutions containing D-soritol 30 % (g/100 g dry gelatin) and variable amounts of BDDGE (0?3 g/100 g dry gelatin). The addition of 1 % BDDGE (g/100 g dry gelatin) positively influenced the solubility, water vapor permeability, and mechanical properties of the produced films. Water solubility decreased about 77 %; the water vapor permeability enhanced 20 %, and the stretching ability increased 11 times while the tensile strength was reduced up to 7-fold with regard to the non-cross-linked counterpart. A simple extraction procedure was applied to remove the potential un-reacted BDDGE and its hydrolysis products from BDDGE-treated gelatin films. Quantification was performed by gas chromatography combined with mass spectrometry (GC/MS), being lower than 0.25 μg/kg (below the limit of detection, 0.30 μg/L). Results suggested that water-soluble BDDGE may provide an effective cross-linking alternative to the usual aldehyde-based strategy to manufacture gelatin films with potential use as biodegradable food packaging materials. |
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