Laboratoire Matière et Systèmes Complexes (MSC), UMR CNRS 7057, Université Paris Diderot - Paris 7, Bâtiment Condorcet, CC 7056, 75205 Paris Cedex 13, France.
Biomacromolecules. 2012 Mar 12;13(3):751-9. doi: 10.1021/bm201674n. Epub 2012 Feb 27.
Interactions of plant tannins with polysaccharide hyaluronan are studied by means of light scattering and small-angle X-ray scattering (SAXS). In this paper, we show that (1) the tannin-polysaccharide complexes remain stable in colloidal suspension; (2) the masses and structures of colloidal tannin-polysaccharide objects depend on the tannin degree of polymerization; and (3) the densities of tannin-polysaccharide aggregates are about 7 times lower than the density of a single solvated polysaccharide molecule. Short tannins and polysaccharides are aggregated in loose oligomeric structures whose sizes are comparable to a single polysaccharide molecule. Tannins longer than 10 nm and polysaccharides are aggregated in larger microgel-like particles whose sizes exceed 200 nm.
采用光散射和小角 X 射线散射（SAXS）研究了植物单宁与多糖透明质酸的相互作用。本文表明：（1）单宁-多糖复合物在胶体悬浮液中保持稳定；（2）胶体单宁-多糖物体的质量和结构取决于单宁的聚合度；（3）单宁-多糖聚集体的密度比单个溶剂化多糖分子的密度低约 7 倍。短单宁和多糖聚集在松散的低聚物结构中，其大小与单个多糖分子相当。长度超过 10nm 的单宁和多糖聚集在更大的微凝胶状颗粒中，其大小超过 200nm。
