Recycle of spent cells from anaerobic succinate fermentation / 生物工程学报
Chinese Journal of Biotechnology
;
(12): 1276-1280, 2010.
Article
Dans Chinois
| WPRIM
| ID: wpr-351596
ABSTRACT
Spent cells recovered from anaerobic fermentation by Actinobacillus succinogenes were used as nitrogen source for succinic acid production. Three methods were investigated for cell wall-breaking. The results showed that enzymatic hydrolysis was more effective for higher succinic acid yield. When the enzymatic hydrolysate of spent cells was added to reach a total nitrogen concentration 1.11 g/L (equivalent to 10 g/L yeast extract), the succinic acid concentration was 42.0 g/L, but it increased slightly when enhancing the level of enzymatic hydrolysate. However, when 5 g/L yeast extract was supplemented with the enzymatic hydrolysate of spent cells, the succinic acid concentration reached 75.5 g/L after 36 hours and, the succinic acid productivity was 2.10 g/(L x h), which increased by 66.7% compared with the fermentation using 10 g/L yeast extract. Therefore, enzymatic hydrolysate of spent cells could replace 50% yeast extract in the original medium for succinic acid production.
Texte intégral:
Disponible
Indice:
WPRIM (Pacifique occidental)
Sujet Principal:
Pharmacologie
/
Actinobacillus
/
Acide succinique
/
Milieux de culture
/
Fermentation
/
Anaérobiose
/
Déchets industriels
/
Métabolisme
langue:
Chinois
Texte intégral:
Chinese Journal of Biotechnology
Année:
2010
Type:
Article
Documents relatifs à ce sujet
MEDLINE
...
LILACS
LIS