title: Effect of additives on the tensile performance and protein solubility of industrial oilseed residual based plastics.
abstract: 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.
authors: Department of Plant Breeding, The Swedish University of Agricultural Sciences , SE-230 53 Alnarp, Sweden.
authors: William R
authors: WR
authors: Newson
authors: Ramune
authors: R
authors: Kuktaite
authors: Mikael S
authors: MS
authors: Hedenqvist
authors: Mikael
authors: M
authors: Gällstedt
authors: Eva
authors: E
authors: Johansson
mesh_terms: D001937:Brassica / Q000737:chemistry*; D019343:Citric Acid / Q000494:pharmacology; D031218:Crambe Plant / Q000737:chemistry*; D006358:Hot Temperature; D006863:Hydrogen-Ion Concentration; D010938:Plant Oils / Q000737:chemistry*; D010940:Plant Proteins / Q000737:chemistry*; D010969:Plastics / Q000737:chemistry*; D012972:Sodium Hydroxide / Q000494:pharmacology; D012995:Solubility; D013718:Tensile Strength
chemical_list: D010938:Plant Oils; D010940:Plant Proteins; D010969:Plastics; D019343:Citric Acid; D012972:Sodium Hydroxide