Valorization of agar production residue as a filler in soy protein hydrogels for 3D printing.

Int J Bioprint

BIOMAT Research Group, University of the Basque Country (UPV/EHU), Escuela de Ingeniería de Gipuzkoa, Plaza de Europa 1, 20018 Donostia-San Sebastián, Spain.

Published: April 2023

Cellulose-containing residue from agar production was incorporated as a filler into soy protein-based hydrogels and revalorized without further purification. Rheological assessment of these hydrogels was carried out in order to confirm their shear-thinning behavior and their suitability for 3D printing. It was observed that all hydrogels behaved as weak gels, which are suitable for 3D printing and have good printability and shape fidelity. The addition of cellulose did not cause chemical crosslinking but physical interactions, which led to morphological changes, thereby promoting hardness and shape recovery of the 3D-printed products. The hydrogel with the highest residue content (8 wt %) showed the highest value (78%) in shape recovery. Furthermore, the physicochemical characterization of these 3D-printed products revealed that although they have high swelling capacity, they preserve their integrity in wet conditions. These results suggested the potential of the 3D-printed products developed using residues without further purification to promote circular economy, increasing the efficiency in resources utilization.

Download full-text PDF

Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10261153PMC
http://dx.doi.org/10.18063/ijb.731DOI Listing

Publication Analysis

Top Keywords

3d-printed products
12
agar production
8
filler soy
8
shape recovery
8
valorization agar
4
production residue
4
residue filler
4
soy protein
4
hydrogels
4
protein hydrogels
4

Similar Publications

Want AI Summaries of new PubMed Abstracts delivered to your In-box?

Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!