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Pulse starch-derived mesoporous bioaerogels prepared by a facile freeze-drying method
Authors: Kehinde James Falua,
Amin Babaei-Ghazvini,
Bishnu Acharya
Identifier: CSBE23250
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Published in: CSBE-SCGAB Technical Conferences » AGM Lethbridge 2023
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Description: Pulses are popular sources of starch, protein, and other essential minerals. However, attention is being shifted to how market opportunities could be created for their co-products after fractionation, especially starch. The development of novel materials (e.g., bioplastics) is one way of expanding their industrial applications. This study, therefore explored the potentials of utilizing air classified and isolated pea, lentil, and faba bean starches as a precursor for fabricating mesoporous bioaerogels via freeze-drying technique. The results evidenced ultra-low densities (<0.1 m2/g), mesopore, high porosities (~99%), low surface areas (SBET = ~4-18 m2/g) for all the aerogels. Adsorption isotherm showed a typical Type II and III profiles while the thermogravimetric analysis showed more weight loss (74.39-78.12%) in aerogels mostly developed from isolated starches. Microstructural studies showed a unique distribution of pores within the developed aerogels. FTIR and XPS studies confirmed the presence of an amide (I, II, III) at different absorption bands range (~1600 ? 1200 cm-1) and functional groups (carboxylic group and the amide group), respectively. All the aerogels samples became stiffer with a corresponding increase in load, and a reversible deformation in the linear region was identified at less than 5% strain. Comparatively, saturated PSBs from air classified starch at a relative humidity of 95% showed a drastic reduction in their compressive moduli (CM), while PSBs from isolated starch experienced markedly high CM. Moisture saturation was achieved at 72 h for all the samples.
Keywords: Pulses, Starch, Bioaerogels
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Date: 2023-07-23
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Conference name: CSBE/SCGAB 2023 Annual Conference, Lethbridge, Alberta, 23-26 July 2023.
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Type: Poster
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Publication type: Text.Abstract
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Relation:
Coverage: North_America
Language 1: en
Language 2:
Rights: Canadian Society for Bioengineering
Notes:
Other files:
DOI:
Description: Pulses are popular sources of starch, protein, and other essential minerals. However, attention is being shifted to how market opportunities could be created for their co-products after fractionation, especially starch. The development of novel materials (e.g., bioplastics) is one way of expanding their industrial applications. This study, therefore explored the potentials of utilizing air classified and isolated pea, lentil, and faba bean starches as a precursor for fabricating mesoporous bioaerogels via freeze-drying technique. The results evidenced ultra-low densities (<0.1 m2/g), mesopore, high porosities (~99%), low surface areas (SBET = ~4-18 m2/g) for all the aerogels. Adsorption isotherm showed a typical Type II and III profiles while the thermogravimetric analysis showed more weight loss (74.39-78.12%) in aerogels mostly developed from isolated starches. Microstructural studies showed a unique distribution of pores within the developed aerogels. FTIR and XPS studies confirmed the presence of an amide (I, II, III) at different absorption bands range (~1600 ? 1200 cm-1) and functional groups (carboxylic group and the amide group), respectively. All the aerogels samples became stiffer with a corresponding increase in load, and a reversible deformation in the linear region was identified at less than 5% strain. Comparatively, saturated PSBs from air classified starch at a relative humidity of 95% showed a drastic reduction in their compressive moduli (CM), while PSBs from isolated starch experienced markedly high CM. Moisture saturation was achieved at 72 h for all the samples.
Keywords: Pulses, Starch, Bioaerogels
Résumé:
Mots-clés:
Citation:
Volume:
Issue:
Pages -
Contributor:
Date: 2023-07-23
Technical field:
Conference name: CSBE/SCGAB 2023 Annual Conference, Lethbridge, Alberta, 23-26 July 2023.
Session name:
Other information:
Type: Poster
Format:
Publication type: Text.Abstract
Source:
Relation:
Coverage: North_America
Language 1: en
Language 2:
Rights: Canadian Society for Bioengineering
Notes:
Other files:
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