For the determination of Total Dietary Fiber in cereal products,
foodstuffs, feeds and other materials

Principle:
(α-amylase + amyloglucosidase)
(1) Starch + HO → D-glucose

(protease)
(2) Protein + HO → peptides

(3) Dietary fiber determined gravimetrically following alcohol
precipitation

(4) Ash and residual protein determined on DF residues
and subtracted