Chemistry: molecular biology and microbiology – Micro-organism – tissue cell culture or enzyme using process... – Preparing oxygen-containing organic compound
Reexamination Certificate
2006-02-09
2009-02-24
Lilling, Herbert J. (Department: 1657)
Chemistry: molecular biology and microbiology
Micro-organism, tissue cell culture or enzyme using process...
Preparing oxygen-containing organic compound
C435S069100, C435S099000, C435S161000, C435S174000, C435S209000, C435S254100
Reexamination Certificate
active
07494792
ABSTRACT:
A process for producing cellulolytic and/or hemicellulolytic enzymes uses the residue from the ethanolic fermentation of enzymatic hydrolyzates of cellulosic or ligno-cellulosic materials. This process may be integrated into a process for the production of ethanol from cellulosic or ligno-cellulosic materials which comprises the following steps:1) chemical and/or physical pre-treatment of a cellulosic or ligno-cellulosic substrate;2) enzymatic hydrolysis of the pre-treated substrate using cellulolytic and/or hemicellulolytic enzymes;3) ethanolic fermentation, by a suitable alcohologenic microorganism, of the hydrolyzate from step (2) and production of a fermentation must; and4) separation of the alcohologenic microorganism used in step (3), separation/purification of the ethanol and production of an aqueous phase constituting a residue;and in which said residue serves for the production of the cellulolytic and/or hemicellulolytic enzymes used in step 2).
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Ballerini Daniel
Monot Frederic
Warzywoda Michel
Institut Francais du Pe'trole
Lilling Herbert J.
Millen White Zelano & Branigan P.C.
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