Thermodynamic model of Ca(II)-alginate beads drying by spectrophotometry
[EN] The purpose of this work was to study the drying process of Ca(II)-alginate beads with/without sucrose, monitored by infrared thermography (IRT), in order to describe the critical points and the transformations suffered by the systems. Beads were obtained by the drop method and the drying proce...
| Autores: | , , , |
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| Tipo de recurso: | capítulo de libro |
| Fecha de publicación: | 2018 |
| 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:10251/118061 |
| Acceso en línea: | https://riunet.upv.es/handle/10251/118061 |
| Access Level: | acceso abierto |
| Palabra clave: | Drying Dehydration Dewatering Emerging technologies Products quality Process control Environmental Evaporation Sublimation Diffusion Energy Intensification Encapsulation Thermodynamic Spectrophotometry Beads |
| Sumario: | [EN] The purpose of this work was to study the drying process of Ca(II)-alginate beads with/without sucrose, monitored by infrared thermography (IRT), in order to describe the critical points and the transformations suffered by the systems. Beads were obtained by the drop method and the drying process was performed at 40 ºC and 1.5 m/s. IRT was measured by a thermal imager Optris PI® 160. Mass, aw, xw and volume were also obtained. It was demonstrated that IRT is a good monitoring tool, able to analyzed heat transfer in colloidal systems. A thermodynamic model able to predict the mechanical phenomena of the beads throughout drying process has been developed. |
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