A process of producing a fermentation product

C - Chemistry – Metallurgy – 12 – P

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C12P 7/06 (2006.01)

Patent

CA 2566252

The invention relates to a process of producing a fermentation product, such as ethanol, from starch-containing material, including i) subjecting starch- containing material to an alpha-amylase, ii) subjecting the material obtained in step i) to an alpha-glucosidase and/or a maltose-generating enzyme, and iii) fermenting the material in the presence of a fermenting organism, such as yeast. Alternatively the invention relates to a process of producing a fermentation product from starch-containing material, preferably granular starch, which process comprises: a) subjecting starch-containing material to an alpha-glucosidase and optionally a glucose-generating and/or maltose- generating enzyme, and b) fermenting the material in the presence of a fermenting organism.

L'invention concerne un procédé de production d'un produit de fermentation, tel que l'éthanol, à partir d'un matériau contenant de l'amidon, procédé caractérisé en ce qu'il comprend les étapes suivantes : i) soumettre le matériau contenant de l'amidon à une amylase alpha, ii) soumettre le matériau obtenu à l'étape i) à une glucosidase alpha et/ou à une enzyme générant une maltose, et iii) fermentation du matériau en présence d'un organisme de fermentation tel qu'une levure. En variante, l'invention concerne un procédé de production d'un produit de fermentation à partir d'un matériau contenant, de préférence, de l'amidon granulé, procédé comprenant les étapes suivantes : a) soumettre le matériau contenant de l'amidon à une glucosidase alpha et, éventuellement, à une enzyme générant du glucose et/ou à une enzyme générant du maltose, et b) fermentation du matériau en présence d'un organisme de fermentation.

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