Freeze-Drying versus Heat-Drying: Effect on Protein-Based Superabsorbent Material
| Autor: | Manuel Felix, Estefanía Álvarez-Castillo, Carlos Bengoechea, Antonio Bernal Guerrero |
|---|---|
| Přispěvatelé: | Universidad de Sevilla. Departamento de Ingeniería Química |
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Materials science
Absorption of water Porcine plasma protein Bioengineering TP1-1185 02 engineering and technology 010402 general chemistry 01 natural sciences Freeze-drying chemistry.chemical_compound Rheology Glycerol superabsorbent materials Chemical Engineering (miscellaneous) Porosity QD1-999 polymer processing Shrinkage Superabsorbent materials Chemical technology Process Chemistry and Technology Plasticizer porcine plasma protein 021001 nanoscience & nanotechnology 0104 chemical sciences Chemistry Chemical engineering chemistry rheology Polymer processing Absorption (chemistry) 0210 nano-technology |
| Zdroj: | Processes Volume 9 Issue 6 Processes, Vol 9, Iss 1076, p 1076 (2021) idUS. Depósito de Investigación de la Universidad de Sevilla instname |
| ISSN: | 2227-9717 |
| DOI: | 10.3390/pr9061076 |
| Popis: | 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). Ministerio de Ciencia e Innovación RTI2018-097100-B-C21, PRE2019-089815 |
| Databáze: | OpenAIRE |
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