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Effect of additives on the tensile performance and protein solubility of industrial oilseed residual based plastics
SLU Swedish University of Agricultural Sciences, Sweden.
SLU Swedish University of Agricultural Sciences, Sweden.
KTH Royal Institute of Technology, Sweden.
RISE, Innventia.
Show others and affiliations
2014 (English)In: Journal of Agricultural and Food Chemistry, ISSN 0021-8561, E-ISSN 1520-5118, Vol. 62, no 28, p. 6707-6715Article in journal (Refereed) Published
Abstract [en]

Ten chemical additives were selected from the literature for their proposed modifying activity in protein-protein interactions. These consisted of acids, bases, reducing agents, and denaturants and were added to residual deoiled meals of Crambe abyssinica (crambe) and Brassica carinata (carinata) to modify the properties of plastics produced through hot compression molding at 130 °C. The films produced were examined for tensile properties, protein solubility, molecular weight distribution, and water absorption. Of the additives tested, NaOH had the greatest positive effect on tensile properties, with increases of 105% in maximum stress and 200% in strain at maximum stress for crambe and a 70% increase in strain at maximum stress for carinata. Stiffness was not increased by any of the applied additives. Changes in tensile strength and elongation for crambe and elongation for carinata were related to changes in protein solubility. Increased pH was the most successful in improving the protein aggregation and mechanical properties within the complex chemistry of residual oilseed meals.

Place, publisher, year, edition, pages
2014. Vol. 62, no 28, p. 6707-6715
National Category
Polymer Chemistry
Identifiers
URN: urn:nbn:se:ri:diva-9823DOI: 10.1021/jf5015928Scopus ID: 2-s2.0-84904430826OAI: oai:DiVA.org:ri-9823DiVA, id: diva2:968608
Available from: 2016-09-12 Created: 2016-09-12 Last updated: 2020-12-01Bibliographically approved

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