Optimization of Ink Composition and 3D Printing Process to Develop Soy Protein-Based Scaffolds

Inks based on soybean protein isolate (SPI) were developed and their formulations were optimized as a function of the ink heat treatment and the content of other biopolymers to assess the effects of protein–polysaccharides and protein–protein interactions. First, the rheological behavior of the inks...

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Authors: Carranza Fernandino, Teresa; Tejo-Otero, Aitor; Bengoechea Ruiz, Carlos; Guerrero, Pedro; Caba, Koro de la
Format: Article
Status:Published version
Publication date:2024
Country:España
Institution:Universidad de Sevilla (US)
Repository:idUS. Depósito de Investigación de la Universidad de Sevilla
OAI Identifier:oai:idus.us.es:11441/159484
Online Access:https://hdl.handle.net/11441/159484
https://doi.org/10.3390/gels10040223
Access Level:Open access
Keyword:Bio-based ink
3D printing
Rheology
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author Carranza Fernandino, Teresa
author2 Tejo-Otero, Aitor
Bengoechea Ruiz, Carlos
Guerrero, Pedro
Caba, Koro de la
author2_role author
author
author
author
author_browse Bengoechea Ruiz, Carlos
Caba, Koro de la
Carranza Fernandino, Teresa
Guerrero, Pedro
Tejo-Otero, Aitor
author_facet Carranza Fernandino, Teresa
Tejo-Otero, Aitor
Bengoechea Ruiz, Carlos
Guerrero, Pedro
Caba, Koro de la
author_role author
collection idUS. Depósito de Investigación de la Universidad de Sevilla
description Inks based on soybean protein isolate (SPI) were developed and their formulations were optimized as a function of the ink heat treatment and the content of other biopolymers to assess the effects of protein–polysaccharides and protein–protein interactions. First, the rheological behavior of the inks was analyzed in relation to the polyvinyl alcohol (PVA) concentration employed (20, 25, and 30 wt%) and, as a result of the analysis, the ink with 25 wt% PVA was selected. Additionally, sodium alginate (SA) and gelatin (GEL) were added to the formulations to improve the viscoelastic properties of the inks and the effect of the SA or GEL concentrations (1, 2, and 3 wt%) was studied. All inks showed shear thinning behavior and self-supporting abilities. Among all the 3D printed scaffolds, those with higher SA (3 wt%) or GEL (2 and 3 wt%) content showed higher shape fidelity and were selected for further characterization. Texture profile analysis demonstrated that the scaffolds prepared with previously heat-treated inks containing 3 wt% GEL showed the highest strength. Additionally, these scaffolds showed a higher water-uptake capacity profile.
eu_rights_str_mv openAccess
format article
id ES_fc759aa5a893aec6b0b2dcdb7fa7ae47
institution Universidad de Sevilla (US)
instname_str Universidad de Sevilla (US)
network_acronym_str ES
network_name_str España
oai_identifier_str oai:idus.us.es:11441/159484
publishDate 2024
publishDateSort 2024
publisher MDPI
publisherStr MDPI
reponame_str idUS. Depósito de Investigación de la Universidad de Sevilla
spelling Optimization of Ink Composition and 3D Printing Process to Develop Soy Protein-Based Scaffolds Carranza Fernandino, Teresa Tejo-Otero, Aitor Bengoechea Ruiz, Carlos Guerrero, Pedro Caba, Koro de la Bio-based ink 3D printing Rheology Inks based on soybean protein isolate (SPI) were developed and their formulations were optimized as a function of the ink heat treatment and the content of other biopolymers to assess the effects of protein–polysaccharides and protein–protein interactions. First, the rheological behavior of the inks was analyzed in relation to the polyvinyl alcohol (PVA) concentration employed (20, 25, and 30 wt%) and, as a result of the analysis, the ink with 25 wt% PVA was selected. Additionally, sodium alginate (SA) and gelatin (GEL) were added to the formulations to improve the viscoelastic properties of the inks and the effect of the SA or GEL concentrations (1, 2, and 3 wt%) was studied. All inks showed shear thinning behavior and self-supporting abilities. Among all the 3D printed scaffolds, those with higher SA (3 wt%) or GEL (2 and 3 wt%) content showed higher shape fidelity and were selected for further characterization. Texture profile analysis demonstrated that the scaffolds prepared with previously heat-treated inks containing 3 wt% GEL showed the highest strength. Additionally, these scaffolds showed a higher water-uptake capacity profile. MDPI https://hdl.handle.net/11441/159484 https://doi.org/10.3390/gels10040223
spellingShingle Optimization of Ink Composition and 3D Printing Process to Develop Soy Protein-Based Scaffolds
Carranza Fernandino, Teresa
Bio-based ink
3D printing
Rheology
status_str publishedVersion
title Optimization of Ink Composition and 3D Printing Process to Develop Soy Protein-Based Scaffolds
title_full Optimization of Ink Composition and 3D Printing Process to Develop Soy Protein-Based Scaffolds
title_fullStr Optimization of Ink Composition and 3D Printing Process to Develop Soy Protein-Based Scaffolds
title_full_unstemmed Optimization of Ink Composition and 3D Printing Process to Develop Soy Protein-Based Scaffolds
title_short Optimization of Ink Composition and 3D Printing Process to Develop Soy Protein-Based Scaffolds
title_sort Optimization of Ink Composition and 3D Printing Process to Develop Soy Protein-Based Scaffolds
topic Bio-based ink
3D printing
Rheology
topic_facet Bio-based ink
3D printing
Rheology
url https://hdl.handle.net/11441/159484
https://doi.org/10.3390/gels10040223