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Improvement of mechanical and water absorption properties of plant protein based bioplastics
University of Huelva, Spain.
University of Huelva, Spain.
RISE - Research Institutes of Sweden, Biovetenskap och material, Jordbruk och livsmedel. Chalmers University of Technology, Sweden.ORCID-id: 0000-0003-0310-4465
University of Huelva, Spain.
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2017 (Engelska)Ingår i: Food Hydrocolloids, ISSN 0268-005X, E-ISSN 1873-7137, Vol. 73, s. 21-29Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

Bioplastics deriving from plant proteins are becoming an increasingly popular source of raw material for plastic products since they are not only biodegradable but renewable resources. However, these bioplastics require improved mechanical and water absorption properties to be suitable for many applications, such as packaging. For this reason, this study considers potato and rice proteins as a new source for the manufacture of bioplastics. The proteins were mixed with different glycerol concentrations followed by thermomoulding at temperatures from 60 to 180 °C. The resulting bioplastic is characterized in terms of thermo-mechanical properties, water absorption and molecular weight distribution. Compared to well-known wheat gluten, these bioplastics required higher temperatures for their thermomoulding. However, both of them were more structured materials and exhibited less water absorption (e.g. as low as 9 wt.%) than those obtained for wheat gluten blend. Potato protein-based bioplastics showed complex modulus values comparable to synthetic polymers such as Low Density Polyethylene (LDPE).

Ort, förlag, år, upplaga, sidor
2017. Vol. 73, s. 21-29
Nyckelord [en]
Bioplastics, Molecular weight properties, Potato protein, Rheology, Rice protein, Water absorption
Nationell ämneskategori
Naturvetenskap
Identifikatorer
URN: urn:nbn:se:ri:diva-30779DOI: 10.1016/j.foodhyd.2017.06.022Scopus ID: 2-s2.0-85020998931OAI: oai:DiVA.org:ri-30779DiVA, id: diva2:1135477
Anmärkning

 Funding details: MAT2011-29275-C02-01, MINECO, Ministerio de Economía y Competitividad; Funding text: This work is part of a research project sponsored by the “Ministerio de Economía y Competitividad” (Ref. MAT2011-29275-C02-01).

Tillgänglig från: 2017-08-23 Skapad: 2017-08-23 Senast uppdaterad: 2019-02-05Bibliografiskt granskad

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Förlagets fulltextScopushttp://www.sciencedirect.com/science/article/pii/S0268005X17304423

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