Nederlandse Organisatie Voor Toegepast-natuurwetenschappelijk Onderzoek Tno

N.v. Nederlandsch Octrooibureau

Stichting Wageningen Research

Ricardo Nagtegaal

Theodoor Maximiliaan Slaghek

Jan Matthijs Jetten

Johannes Wilhelmus Timmermans

Maurice Karel Hubertina Essers

Ronald Tako Marinus Van Den Dool

Alida Anna Catharina Maria Oudhuis

A process for producing thermally inhibited starch is described resulting in a viscostable starch product. The process comprises providing an alkaline starch having a pH, when measured in a 20% (w/v) aqueous dispersion, between 9.1 and 11.2, adjusting the water content of the starch to between 2 and 22 wt. %, heating the starch between 130 and 190&#xb0; C., especially between 140 and 180&#xb0; C., for a sufficient time and at a sufficient pressure for the inhibition of the starch to be initiated before the water content has reached a level of 1 wt. % and before the pH has reached a value of 9, continuing heating the starch between 140 and 190&#xb0; C. until viscostability is achieved, and cooling and optionally further processing the starch.

Hydrothermally modified starch

A colourless resistant starch is produced by a process comprising (i) suspending starch in a C2-C4 alcohol, in particular ethanol, in the presence of 0.01-3.0% (w/w) of acid based on the starch; (ii) heating the suspended starch at a temperature of 70-160&#xb0; C., in particular 78-120&#xb0; C., and (c) isolating the resulting product. The resulting starch has a resistant fraction of at least 20%.

Resistant starch

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Delft, Netherlands

Ricardo Nagtegaal