Optimization and scale-up of L-lactic acid fermentation by mutant strain Rhizopus sp. MK-96-1196 in airlift bioreactors.
J Biosci Bioeng
; 96(1): 65-9, 2003.
Article
en En
| MEDLINE
| ID: mdl-16233484
ABSTRACT
We determined the optimum culture conditions such as inoculum size, initial starch concentration, pH during the fermentation and aeration rate for L-lactic acid production by Rhizopus sp. MK-96-1196 in a 3-l airlift bioreactor. More than 90 g/l of L-lactic acid was produced from only partially enzymatically hydrolyzed corn starch with a production rate of 2.6 g/l/h and a product yield of 87% based on the starch consumed under the optimum conditions in the 3-l airlift bioreactor. Scale-up from the 3-l to a 100-l airlift bioreactor for L-lactic acid fermentation was carried out using V(s)(cm/s) as a scale-up criterion. The production rates and yields of L-lactic acid in both bioreactors appeared to be fairly well correlated with k(L)a (1/h).
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01-internacional
Base de datos:
MEDLINE
Idioma:
En
Revista:
J Biosci Bioeng
Asunto de la revista:
ENGENHARIA BIOMEDICA
/
MICROBIOLOGIA
Año:
2003
Tipo del documento:
Article
País de afiliación:
Japón