Structure and Morphology of Wheat Gluten Films: From Polymeric Protein Aggregates toward Superstructure Arrangements

Sammanfattning

Evaluation of structure and morphology of extruded wheat gluten (WG) films showed WG protein assemblies elucidated on a range of length scales from nano (4.4 angstrom and 9 to 10 angstrom, up to 70 angstrom) to micro (10 mu m). The presence of NaOH in WG films induced a tetragonal structure with unit cell parameters, a = 51.85 angstrom and c = 40.65 angstrom, whereas NH(4)OH resulted in a bidimensional hexagonal close-packed (HCP) structure with a lattice parameter of 70 angstrom. In the WG films with NH(4)OH, a highly polymerized protein pattern with intimately mixed glutenins and gliadins bounded through SH/SS interchange reactions was found. A large content of beta-sheet structures was also found in these films, and the film structure was oriented in the extrusion direction. In conclusion, this study highlights complexities of the supramolecular structures and conformations of wheat gluten polymeric proteins in biofilms not previously reported for biobased materials.

Publicerad i

Biomacromolecules
2011, volym: 12, nummer: 5, sidor: 1438-1448
Utgivare: AMER CHEMICAL SOC

SLU författare

• Kuktaite, Ramune

  • Institutionen för biosystem och teknologi, Sveriges lantbruksuniversitet
    

• Marttila, Salla

  • Institutionen för växtskyddsbiologi, Sveriges lantbruksuniversitet
    

• Ignell, Rickard

  • Institutionen för växtskyddsbiologi, Sveriges lantbruksuniversitet
    

• Johansson, Eva

  • Institutionen för biosystem och teknologi, Sveriges lantbruksuniversitet
    

UKÄ forskningsämne

Genetik och genomik

Publikationens identifierare

• DOI: https://doi.org/10.1021/bm200009h

Permanent länk till denna sida (URI)

https://res.slu.se/id/publ/56977