Date of Award
Bachelor of Science
Pulp and Paper Technology
The effect of molecular weight on the rate of retrogradation of amylose was studied by monitoring turbidity (corrected for molecular shape) with a light scattering photometer. The results obtained showed that by acid modification of the amylose fraction of starch, the chain length of amylose molecules were reduced. The rate of retrogradation increased with decreasing molecular weight until a maximum was reached at 1 1/2 hours of hydrolysis. The rate of retrogradation then decreased with further decreasing molecular weight until retrogradation began to lessen.
O'Daye, Darryl, "The Effect of Molecular Weight on the Retrogradation of Amylose" (1968). Paper Engineering Senior Theses. 417.