초록 ▼

This invention relates to a novel fermentation process and in particular, to fermentative production of ethanol producing in the presence of non-gelled, or granular, starch particles, alpha-amylase and a glucoamylase; characteristic of the present process is recycle of enzymes for renewed use in fer

This invention relates to a novel fermentation process and in particular, to fermentative production of ethanol producing in the presence of non-gelled, or granular, starch particles, alpha-amylase and a glucoamylase; characteristic of the present process is recycle of enzymes for renewed use in fermentation, usually through termination of the fermentation prior to complete disappearance of the granular starch particles, and recovery for use anew of the unconsumed starch, along with enzymes thereon. Fermentation according to practice of this invention proceeds at a near to linear rate in the main.

대표청구항 ▼

A fermentation process which conists essentially of fermenting a 10%-45% w/w aqueous slurry of granular starch for the production of ethanol with an ethanol producing microorganism in the presence of alpha-amylase and gluco-amylase, the conduct of said fermentation being characterized by low levels

A fermentation process which conists essentially of fermenting a 10%-45% w/w aqueous slurry of granular starch for the production of ethanol with an ethanol producing microorganism in the presence of alpha-amylase and gluco-amylase, the conduct of said fermentation being characterized by low levels of dextrin and fermentable sugars in solution in the fermentation broth throughout the fermentation, and, thereafter recovering enzymes from the fermentation broth for use anew in fermentation of granular starch.