Continuous fermentation process for the production of metabolities using a moving filter
First Claim
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1. A continuous process for producing a metabolite from a carbohydrate substrate which comprises the steps of:
- (A) pulverizing the carbohydrate substrate;
(B) liquefying and saccharifying the pulverized substrate;
(C) continuously fermenting the lique-saccharified substrate in a fermentor, in the presence of biological cells and a culture medium to produce a fermentation product mixture; and
(D) recovering the metabolite from the fermentation product mixture;
wherein the fermentor is equipped with a moving filter having an opening size ranging from 50 to 2,000 mesh and the biological cells are flocculent cells maintained at a concentration ranging from 90 to 160 g/l by the moving filter during the fermentation step.
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Abstract
A metabolite, e.g., ethanol, is continuously produced from low cost carbohydrate substrates by a process which comprises pulverizing the carbohydrate substrate; liquefying and saccharifying the pulverized substrate; continuously fermenting the lique-saccharified substrate in a fermentor equipped with a moving filter, in the presence of flocculent biological cells maintained at a concentration ranging from 90 to 160 g/l by using the moving filter and a culture medium to produce a fermentation product mixture; and recovering the desired metabolite from the fermentation product mixture.
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Citations
15 Claims
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1. A continuous process for producing a metabolite from a carbohydrate substrate which comprises the steps of:
- (A) pulverizing the carbohydrate substrate;
(B) liquefying and saccharifying the pulverized substrate;
(C) continuously fermenting the lique-saccharified substrate in a fermentor, in the presence of biological cells and a culture medium to produce a fermentation product mixture; and
(D) recovering the metabolite from the fermentation product mixture;
wherein the fermentor is equipped with a moving filter having an opening size ranging from 50 to 2,000 mesh and the biological cells are flocculent cells maintained at a concentration ranging from 90 to 160 g/l by the moving filter during the fermentation step. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
- (A) pulverizing the carbohydrate substrate;
Specification