Ebringerová A, Hromádková Z
Institute of Chemistry, Slovak Academy of Sciences, Bratislava, Slovak Republic.
Ultrason Sonochem. 1997 Oct;4(4):305-9. doi: 10.1016/s1350-4177(97)00037-0.
Ultrasonic irradiation of a water-soluble corn hull xylan fraction in neutral and alkaline aqueous medium has been found to produce significant changes in its molecular properties. Degradation is first manifested by a decrease in the large molar mass component under generation of polymer chains with about the same size as those of the main molar mass component. The latter is slightly shifted to the lower molar mass region only at stronger irradiation conditions. Ultrasonication of the xylan in neutral aqueous medium at high ultrasound power and/or long irradiation caused no significant changes in its sugar composition, primary structure and viscoelastic properties.
已发现，在中性和碱性水性介质中对水溶性玉米皮木聚糖级分进行超声辐照会使其分子特性发生显著变化。降解首先表现为在生成与主要摩尔质量组分大小大致相同的聚合物链的过程中，大摩尔质量组分减少。只有在更强的辐照条件下，后者才会略微向较低摩尔质量区域移动。在高超声功率和/或长时间辐照下，在中性水性介质中对木聚糖进行超声处理，其糖组成、一级结构和粘弹性特性没有显著变化。
