Impact of heterogeneously crosslinked calcium alginate networks on the encapsulation of b-carotene-loaded beads
[EN] This study investigated the impact of heterogeneity of crosslinking on a range of physical and mechanical properties of calcium alginate networks formed via external gelation with 0.25¿2% sodium alginate and 2.5 and 5% CaCl 1 . Crosslinking in films with 1¿2% alginate was highly heterogeneous,...
| Autores: | , , |
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 2021 |
| País: | España |
| Institución: | Universitat Politècnica de València (UPV) |
| Repositorio: | RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia |
| Idioma: | inglés |
| OAI Identifier: | oai:riunet.upv.es:10251/232391 |
| Acceso en línea: | https://riunet.upv.es/handle/10251/232391 |
| Access Level: | acceso abierto |
| Palabra clave: | Calcium alginate networks Heterogeneity crosslinking Encapsulation Barrier properties Mechanical properties B-Carotene 02.- Poner fin al hambre, conseguir la seguridad alimentaria y una mejor nutrición, y promover la agricultura sostenible 03.- Garantizar una vida saludable y promover el bienestar para todos y todas en todas las edades |
| Sumario: | [EN] This study investigated the impact of heterogeneity of crosslinking on a range of physical and mechanical properties of calcium alginate networks formed via external gelation with 0.25¿2% sodium alginate and 2.5 and 5% CaCl 1 . Crosslinking in films with 1¿2% alginate was highly heterogeneous, as indicated by their lower calcium content (35¿7 mg Ca¿g alginate ) and apparent solubility (5¿6%). Overall, films with 1¿2% alginate showed higher resistance (tensile strength = 51¿147 MPa) but lower elasticity (Elastic Modulus = 2136¿10,079 MPa) than other samples more homogeneous in nature (0.5% alginate, Elastic Modulus = 1918 MPa). Beads with 0.5% alginate prevented the degradation of ß-carotene 1.5 times more efficiently than 1% beads (5% CaCl ) at any of the storage temperatures studied. Therefore, it was postulated that calcium alginate networks crosslinked to a greater extent and in a more homogeneous manner showed better mechanical performance and barrier properties for encapsulation applications. |
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