Effects of gamma irradiation on the physical and structural properties of β-glucan
- 作者：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
- 关键词：β ; -Glucan ; Gamma irradiation ; Viscosity ; Solubility ; Radiolysis
- 刊名：Radiation Physics and Chemistry
- 出版年：2008
- 期刊代码：68_0969806x
- 类别：ph
- 出版时间：June 2008
- 卷：77
- 期：6
- 页码：781-786
- 文件大小：650 K
摘要
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.