Production of enzyme-resistant starch by extrusion

Details Production of enzyme-resistant starch by extrusion Production of enzyme-resistant starch by extrusion

C - Chemistry, Metallurgy

08

B

C08B 30/12 (2006.01) A23L 1/00 (2006.01)

Patent

CA 2608139

A process for producing alpha-amylase resistant starch comprises extruding a feed starch at a temperature in the range of about 60-220~C, thereby producing a product alpha-amylase resistant starch. The feed starch can be in the form of an aqueous slurry or paste that has a dry solids concentration of at least about 50% by weight. The process optionally can include the additional step of heating the product starch to a temperature of at least about 90~C in the presence of moisture, to increase further the alpha- amylase resistance of the product.

La présente invention concerne un procédé de production d'amidon résistant à l'alpha-amylase qui comprend l'extrusion de l'amidon de charge à une température comprise entre environ 60 et 220 °C, ce qui permet d'obtenir un amidon résistant à l'alpha-amylase. L'amidon de charge peut être sous forme de pâte ou de boue aqueuse dont la concentration en solides sècs est d'au moins 50 % en poids. Le procédé peut éventuellement inclure une étape supplémentaire de chauffage de l'amidon obtenu à une température d'au moins environ 90 °C en présence d'humidité, ceci afin d'augmenter la résistance à l'alpha-amylase du produit.

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