The effect of ultrasound on the structure and properties of the water-soluble corn hull heteroxylan

被引:69
作者
Ebringerova, A [1 ]
Hromadkova, Z [1 ]
机构
[1] Slovak Acad Sci, Inst Chem, Bratislava 84238, Slovakia
关键词
corn hull xylan; degradation; flow behaviour; primary structure; ultrasound; viscoelastic properties;
D O I
10.1016/S1350-4177(97)00037-0
中图分类号
O42 [声学];
学科分类号
070206 ; 082403 ;
摘要
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. (C) 1997 Elsevier Science B.V.
引用
收藏
页码:305 / 309
页数:5
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