The invention relates to matrix-forming amylose products for programmed
release systems and a process for the preparation thereof. These amylose
products have a dextrose equivalent (DE) of 5 to 10, a content of
long-chain amylose of 20 to 40 wt. % on dry substance, a content of
short-chain amylose of 40 to 80 wt. % on dry substance and a specific
surface area of 0.4 to less than 1.0 m.sup.2 /g.