Aspergillus kawachi acid-stable alpha amylase and...

C - Chemistry – Metallurgy – 12 – N

Patent

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C12N 9/30 (2006.01) C12N 9/34 (2006.01) C12P 7/06 (2006.01)

Patent

CA 2567570

The present invention relates to a method for producing an end product and particularly an alcohol which comprises contacting a granular starch substrate with an acid-stable alpha amylase (asAA) having granular starch hydrolyzing (GSH) activity and a glucoamylase (GA) in a fermentation step which also comprises ethanologenic microorganisms at a temperature between about 25 to 65~C and producing an end-product.

La présente invention concerne un procédé de production d'un produit final et notamment d'un alcool qui consiste à mettre en contact un substrat d'amidon granulaire avec une alpha-amylase stable en milieu acide (asAA) qui présente une activité d'hydrolyse de l'amidon granulaire (GSH) et une glucoamylase (GA) dans une étape de fermentation qui comporte également des micro-organismes éthanologéniques à une température comprise entre environ 25 et 65 °C puis à produire un produit final.

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