Utilization of starch products for biological production by...

C - Chemistry – Metallurgy – 12 – N

Patent

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Details

C12N 15/56 (2006.01) C12N 1/15 (2006.01) C12N 1/19 (2006.01) C12N 1/20 (2006.01) C12N 1/21 (2006.01) C12N 9/44 (2006.01) C12N 15/63 (2006.01) C12P 7/18 (2006.01) C12P 7/20 (2006.01) C12P 19/16 (2006.01)

Patent

CA 2496990

This invention relates to a method for utilizing less purified starch in fermentation processes. One example is a recombinant E. coli containing a exogenous extracellular isoamylase activity that is capable of utilizing small oligomers containing (1, 6) linkages (including but not limited to isomaltose and panose) in fermentations to produce useful products. The invention is useful in large-scale industrial biofermentations by reducing the cost of the substrate carbohydrate.

L'invention concerne un procédé d'utilisation d'amidon moins purifié dans des processus de fermentation. Par exemple, une E. coli recombinante, présentant une activité isoamylasique extracellulaire exogène, est capable d'utiliser de petits oligomères à liaisons 1-6 (notamment mais pas exclusivement isomaltose et panose) dans des fermentations pour la préparation de produits utiles. En biofermentations industrielles à grande échelle, cette invention permet de réduire le coût de l'hydrate de carbone utilisé comme substrat.

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