摘要
以纯化魔芋葡甘聚糖（KGM）为研究对象，探讨了不同筛目的KGM粒度与分子尺度（包括分子量与分子构象）的相关性，运用激光粒度分布仪、静态激光散射仪及数显旋光仪分析了粒度分布、分子尺度及旋光值的变化．实验结果表明，梯度细化后KGM的粒径逐步递减，其在无水乙醇介质中分散效果最好（D50=13．11μm）；随粒度的减小，Mw缓慢递减，分子构象由球形分子过渡为线性结构；80～100目KGM的空间不对称性最小，旋光值最大．这些相关性的初步建立为KGM深度开发的理论研究和实践提供了可靠的依据．
In this paper, the relativity on the granularity with different mesh of konjac glucomannan（KGM） and molecular dimension is discussed. Laser particle size analyzer, laser light scattering and digital polarimeter are used to analyze the granularity distribution, molecular characteristics and polarity of KGM. The results show that the granularity of KGM after gradient refining was gradually decreased and KGM was well dispersed in ethanol（ D50 = 13.11 μm）. The Mw of KGM was gradually decreased with its granularity decrease and its molecular conformation was from globular to linear structure. The space asymmetry of KGM at 80-100 meshes was minimum and its polarity was maximum. The primary establishment on the relativity offers the references to KGM theoretical research and practical application.
出处
《湖北工业大学学报》
2007年第2期78-81,共4页
Journal of Hubei University of Technology
基金
武汉市晨光计划(20065004116-52)
