Abstract

Crambe abyssinica is a plant with potential for use in industrial (non-food) plant oil production. The side stream from this oil production is ahigh-protein crambe meal that has limited value, as it is not fit for food or feed use. However, it contains proteins that could potentially makeit a suitable raw material for higher-value products. The purpose of this study was to find methods of making this side stream into extrudedfilms, showing that products with a higher value can be produced. The study mainly considered the development of material compositions andmethods of preparing and extruding the material. Wheat gluten was added as a supportive protein matrix material, together with glycerol as aplasticizer and urea as a denaturant. The extrudate was evaluated with respect to mechanical (tensile testing) and oxygen barrier properties,and the extrudate structure was revealed visually and by scanning electron microscopy. A denser, more homogeneous material had a loweroxygen transmission rate, higher strength, and higher extensibility. The most homogeneous films were made at an extruder die temperature of125-130 °C. It is shown here that a film can be extruded with promising mechanical and oxygen barrier properties, the latter especially after afinal compression molding step.

Keywords

Bioengineering; Issue 119; Crambe meal; side stream; barrier; packaging; extrusion; gluten

Published in

Journal of Visualized Experiments
2017, Volume: 119, number: 119, article number: e54770

SLU Authors

• Newson, William

  • Department of Plant Breeding, Swedish University of Agricultural Sciences
    

• Johansson, Eva

  • Department of Plant Breeding, Swedish University of Agricultural Sciences
    

UKÄ Subject classification

Other Agricultural Sciences not elsewhere specified
Textile, Rubber and Polymeric Materials


Publication identifier

DOI: https://doi.org/10.3791/54770

Permanent link to this page (URI)

https://res.slu.se/id/publ/89471