Amination, Amino and Ammonio Cationic Starches

Amination, Amino and Ammonio (Cationic) Starches 1. Introduction 

Although aldehydes and their hemiacetals and acetals react reversibly with ammonia to form aldehyde ammonias, the direct amination of starch is not possible. Aqueous ammonia slowly degrades starch17 as does liquid ammonia.21 

Starch reacts with proteins. In his early papers, Samec2292 assumed that simple blending of potato starch with a protein resulted in the binding of basic groups of 

---