Singh S Santinath, Bohidar H B, Bandyopadhyay S
Polymer and Biophysics Laboratory, School of Physical Sciences, Jawaharlal Nehru University, New Delhi 110016, India.
Colloids Surf B Biointerfaces. 2007 May 15;57(1):29-36. doi: 10.1016/j.colsurfb.2006.12.017. Epub 2007 Jan 12.
Intermolecular interaction leading to formation of aggregates between gelatin, a polyampholyte, and agar, a polysaccharide was studied in the supernatant of the complex coacervate formed by these biopolymers. Electrophoresis, laser light scattering and viscometry data were used to determine the interaction and the physical structure of these intermolecular soluble complexes by modeling these to be prolate ellipsoids of revolution (rod-like structures with well defined axial ratio and Perrin's factor). Solution ionic strength was found to reduce the axial ratio of these complexes implying the presence of screened polarization-induced electrostatic interaction between the two biopolymers.
在由明胶（一种聚两性电解质）和琼脂（一种多糖）形成的复合凝聚层的上清液中，研究了导致这两种生物聚合物之间形成聚集体的分子间相互作用。通过将这些分子间可溶性复合物建模为旋转长椭球体（具有明确轴比和佩林因子的棒状结构），利用电泳、激光光散射和粘度测定数据来确定这些相互作用以及物理结构。发现溶液离子强度会降低这些复合物的轴比，这意味着两种生物聚合物之间存在屏蔽的极化诱导静电相互作用。
