Artículo
Freeze-drying versus heat-drying: Effect on protein-based superabsorbent material
Autor/es | Álvarez-Castillo, Estefanía
Bengoechea Ruiz, Carlos Félix Ángel, Manuel Guerrero Conejo, Antonio Francisco |
Departamento | Universidad de Sevilla. Departamento de Ingeniería Química |
Fecha de publicación | 2021 |
Fecha de depósito | 2022-01-11 |
Publicado en |
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Resumen | Porcine plasma protein is a by-product of the meat industry, which has already been applied in the manufacture of superabsorbent materials. The effects of plasticizer content (0%, 25%, 50%), together with those of the ... Porcine plasma protein is a by-product of the meat industry, which has already been applied in the manufacture of superabsorbent materials. The effects of plasticizer content (0%, 25%, 50%), together with those of the drying method (freeze-drying, thermal drying at 50◦C), during the processing of superabsorbent porcine plasma matrices were studied in this manuscript. Although the presence of glycerol accelerated the water absorption kinetics, the highest water absorption (~550%) was achieved by samples not containing any plasticizer. Viscoelasticity decreased at higher glycerol contents and especially after water absorption. When swollen samples were dried through freeze-drying, porous structures with a sponge-like appearance were obtained. Oppositely, thermally dried samples suffered an evident shrinkage that reduced porosity, displaying a more uniform surface. The effect of the drying method was observed since only freeze-dried samples can be rehydrated, displaying a superabsorbent ability (absorption higher than 1000%), which could be used in several applications (food, agriculture, personal care). |
Identificador del proyecto | RTI2018-097100-B-C21
PRE2019-089815 |
Cita | Álvarez-Castillo, E., Bengoechea Ruiz, C., Félix Ángel, M. y Guerrero Conejo, A.F. (2021). Freeze-drying versus heat-drying: Effect on protein-based superabsorbent material. Processes, 9 (6), 1076. |
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