Mejia-Aguero L, Galeno F, Hernandez-Hernandez O, Matehus J, Tovar J (2012) Starch determination, amylose content and susceptibility to in vitro amylolysis in flours from the roots of 25 cassava varieties.
Mahomoodally, "Inhibitory potential of five traditionally used native anti-diabetic medicinal plants on [alpha]-amylase, [alpha]-glucosidase, glucose entrapment, and amylolysis kinetics in vitro," Advances in Pharmacological Sciences, vol.
Thus, the fiber matrix of cell walls is a primary hindrance to starch digestion since amylase must penetrate the cell wall prior to amylolysis. Hydration state of the starch is an additional factor affecting digestion rate.