Effects of gamma irradiation on the physical and structural properties of β-glucan

Eui Hong Byun, Jae Hun Kim, Nak Yun Sung, Jong il Choi, Seong Taek Lim, Kwang Hoon Kim, Hong Sun Yook, Myung Woo Byun, Ju Woon Lee

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Abstract

This study was carried out to evaluate the effect of gamma irradiation on the physical and structural properties of β-glucan. β-Glucan solution (10%, w/v) was exposed to a cobalt-60 source (10, 30, and 50 kGy). Gel permeation chromatography data showed that the average molecular weight of irradiated β-glucan significantly decreased as the irradiation dose increased. In addition, gamma irradiation improved the solubility and decreased the viscosity of β-glucan by the radiolysis of the glycosidic bonds, and this effect was dependent upon the absorbed dose. Fourier transform infrared spectroscopy results showed that the functional groups of β-glucan were not significantly affected by gamma irradiation. Scanning electron microscopy results showed that the irradiated β-glucan was deformed into smaller granules. Therefore, gamma irradiation could be used in commercial processes as an effective method to resolve the physical problems involved in the use of β-glucan with high viscosity and low solubility.

Original languageEnglish
Pages (from-to)781-786
Number of pages6
JournalRadiation Physics and Chemistry
Volume77
Issue number6
DOIs
Publication statusPublished - 2008 Jun

Keywords

  • Gamma irradiation
  • Radiolysis
  • Solubility
  • Viscosity
  • β-Glucan

ASJC Scopus subject areas

  • Radiation

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  • Cite this

    Byun, E. H., Kim, J. H., Sung, N. Y., Choi, J. I., Lim, S. T., Kim, K. H., Yook, H. S., Byun, M. W., & Lee, J. W. (2008). Effects of gamma irradiation on the physical and structural properties of β-glucan. Radiation Physics and Chemistry, 77(6), 781-786. https://doi.org/10.1016/j.radphyschem.2007.12.008