Studies on caproic acid fermentation using immobilized cells.
Five carriers were tested for immobilizing caproic acid bacteria. The batch experiment results showed that the calcium alginate was the best one of the five immobilized materials. The characteristics of immobilized caproic acid bacteria cells were evaluated using a standard batch fermentation procedure. In the laboratory-scale experiments, the alginate beads could be maintained at least for 8 months with the yield of the caproic acid level about 11 mg/ml. Under optimum conditions, a maximum yield of caproic acid about 15 mg/ml could be obtained. The observed productive acid rate and its yield of immobilized cells appeared to be greater than that of the corresponding free cells suspension. The cell number per volume of immobilized cells was about ten times that of free cells.
Yuan
J
J
Chengdu Institute of Biology, Chinese Academy of Sciences.
Chen
J
J
Xue
T
T
Wu
Y
Y
D000464:Alginates / Q000494:pharmacology; D002208:Caproates / Q000378:metabolism*; D003013:Clostridium / Q000378:metabolism*; D005285:Fermentation / Q000502:physiology*; D005782:Gels; D020723:Glucuronic Acid; D006603:Hexuronic Acids; D006863:Hydrogen-Ion Concentration; D013696:Temperature
D000464:Alginates; D002208:Caproates; D005782:Gels; D006603:Hexuronic Acids; C037652:hexanoic acid; D020723:Glucuronic Acid