Abstract
Electron beam irradiation (EBI) is now an effective and eco-friendly method to modify the properties of starch. In this study, wheat flour was irradiated at 10 MeV/up to 25 kGy of the electron beam, to analyze the effects of EBI on functional properties and the structure of wheat starch. The functional properties of wheat flour treated by EBI showed an increase in solubility from 15.19% to 50.48%, an increase in water/oil adsorption from 77.67% and 75% to 88.33% and 89.9%, and a decrease in swelling from 12.73 g/g to 5.98 g/g compared to the unirradiated wheat flour. EBI also decreased the rapidly digestible starch and therefore, increase the slowly digestible starch and resistant starch content. The structure of starch was characterized by scanning electron microscopy (SEM), polarized light microscopy (PLM), X-ray diffraction (XRD), and Fourier transform infrared spectroscopy (FTIR), indicating that the long-range crystal structure and short-range ordered structure of wheat starch by EBI decreased. Our results, therefore, may provide some detailed understanding of functional property changes of high starch-based foods by electron beam irradiation treatment technology.
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This work was made possible by Major science and technology projects in Sichuan Province Science and Technology Department (2019ZDZX0003).
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Gang Wang: Conceptualization, Methodology, Data curation, Writing – original draft.
Dan Wang: Supervision. Min Huang: Project Management. All authors reviewed the manuscript.
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Wang, G., Wang, D. & Huang, M. Effect of 10 MeV Electron Beam Irradiation on the Structure and Functional Properties of Wheat Starch. Food Biophysics 18, 470–477 (2023). https://doi.org/10.1007/s11483-023-09787-6
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DOI: https://doi.org/10.1007/s11483-023-09787-6