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DSC studies of gamma-irradiation influence on amylose-lipid complex transition in wheat flour

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Author

  • K Ciesla
  • Ann-Charlotte Eliasson

Summary, in English

DSC studies were carried out in the heating-cooling cycles for non-irradiated and irradiated with gamma-rays ((CO)-C-60) using 30 kGy dose wheat flour. The differences between gelatinisation and reversible transition of amylose-lipid complexes occurring in suspensions of non-irradiated and the irradiated flour (characterized by a dry matter to water ratio of 1: 1 and 1:3) depend on the conditions applied in DSC measurements (concentration, heating/cooling rate) and on the preceding treatment of samples. An essential decrease in the temperature of amylose-lipid complex transition was discovered after irradiation. Retrogradation is inhibited in the dense gels of the irradiated samples as compared to the initial ones. The results are discussed in terms of radiation-induced destruction of the polysaccharide chains and lipid modification.

Department/s

  • Department of Food Technology, Engineering and Nutrition

Publishing year

2005

Language

English

Pages

19-27

Publication/Series

Journal of Thermal Analysis and Calorimetry

Volume

79

Issue

1

Document type

Journal article

Publisher

Akademiai Kiado

Topic

  • Food Engineering

Status

Published

ISBN/ISSN/Other

  • ISSN: 1588-2926