A light scattering investigation of the retrogradation of amylose

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Abstract
Studies of the rate of retrogradation (precipitation) of amylose from aqueous solution utilizing turbidity studies, are reported. A marked dependence of rate on the prior physical state of the amylose preparation is demonstrated. In particular it is concluded that retrogradation is retarded by increased perfection of the helical crystalline form. It is suggested that the rate of retrogradation is primarily governed by the rate of disruption of the intramolecularly hydrogen‐bonded helical form of amylose. The process of retrogradation is thus akin to the prevalent picture of protein denaturation.