Changes in the hierarchical protein polymer structure: urea and temperature effects on the wheat gluten films

Forskningsoutput: TidskriftsbidragArtikel i vetenskaplig tidskrift

Abstract

Understanding bio-based protein polymer structures is important when designing new materials with desirable properties. Here the effect of urea on the wheat gluten (WG) protein structure in WG–urea films was investigated. Small-angle X-ray scattering indicated the formation of a hexagonal closepacked (HCP) hierarchical structure in the WG–urea materials. The HCP structure was influenced significantly by the urea concentration and processing conditions. The interdomain distance dI
between the HCP scattering objects increased with increasing content of urea and the objects seemed to be oriented in the extrusion direction. Additionally, the effect of temperature on the HCP structure was studied and it was shown that at >=55 C the HCP structure disappeared. Transmission electron microscopy revealed a rather denatured pattern of both HMW-glutenins and gliadins in the WG–urea films. The molecular packing of the WG protein polymer can be highly affected by an additive and the processing method used.

Detaljer

Författare
  • Ramune Kuktaite
  • Tomás Plivelic
  • Hasan Türe
  • Mikael S. Hedenqvist
  • Mikael Gällstedt
  • Salla Marttila
  • Eva Johansson
Enheter & grupper
Forskningsområden

Ämnesklassifikation (UKÄ) – OBLIGATORISK

  • Kemi
Originalspråkengelska
TidskriftRSC Advances
StatusPublished - 2012
PublikationskategoriForskning
Peer review utfördJa