280 Partial substitution of starch with maleimide ester, and physical properties of the starch. J. Y. Yoon, J. Y. HONG, K. S. Woo, and S. T. Lim. Korea University Graduate School of Biotechnology. Starch maleimide esters at low degrees of substitution were prepared by reacting corn starch with maleimide in alkaline aqueous media (pH 8-11). The substitution was confirmed and compared under different reaction conditions using NMR spectroscopy and nitrogen analysis. Pasting behaviors and gel properties of the substituted starches were investigated by a viscoanalyzer and a texture analyzer. Metal binding affinity of the starch products was examined in aqueous dispersions containing various toxic heavy metal ions such as Pb, Cu, Cd, and Hg. Copyright 2001 The American Association of Cereal Chemists |