Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
9607663 | Process Biochemistry | 2005 | 4 Pages |
Abstract
Experimental devices for stimulating productivity of lactic acid fermentation were installed and a level meter was used to control the volume of fermentation broth. Experiments were carried out by means of continuous EDF with feed medium. It was verified that 175Â g/L of glucose concentrations in the feed medium was the best value. In this case, the continuous EDF lasted for above 350Â h and was stable for above 200Â h. The maximum productivity, yield and conversion ratio were 8.18Â g/LÂ h, 68.8% and 71%, respectively. Compared with other EDFs, the continuous EDF with a level meter had the highest productivity and produced 2637Â g of lactic acid from 4000Â g of glucose. The amount of lactic acid produced was, due to the longest fermentation time and the highest productivity, about 19.5 times greater than that of the conventional EDF and was about 9.7 times greater than that of the intermittent EDF. The glucose, however, began to be excessive in fermentation broth after 200Â h, resulting in a decrease of lactic acid production.
Keywords
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Bioengineering
Authors
Gao Min-tian, Michiteru Koide, Rie Gotou, Hirokazu Takanashi, Makoto Hirata, Tadashi Hano,