Extrusion of starch
OwnerRonald Peter W Kesselmans, Berend Venema +1inventors
InventorsRonald Peter W Kesselmans, Berend Venema, Egbert Hadderingh
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Abstract
The invention relates to the field of processing starch. In particular, the invention relates to a process for extruding starch to obtain a starch product having a certain intrinsic viscosity when dissolved or dispersed in water, which process requires less specific mechanical energy input than conventional extrusions of starch.
Claims7
A process for preparing a starch product, which has in aqueous solution or dispersion an intrinsic viscosity (IV), which process comprises extruding a starch or a derivative thereof comprising at least 95 wt. %, based on dry substance, of amylopectin, using a specific mechanical energy input (SME)≦1.32*(1/IVproduct−1/IVstarch).
A process according to any of the preceding claims, wherein SME≦1.27*(1/IVproduct−1/IVstarch).
A process according to any of the preceding claims, wherein the starch is converted by etherification, esterification, oxidation, hydrolysis or cross-linking during extrusion.
A starch product obtainable by any of the preceding claims.
Dependencies are inferred from the claim text.