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A kinetic model for citric
acid production
from apple pomac by
Aspergillus niger
M. Sharifzadeh Baei1*,
M. Mahmoudi1 and H. Yunesi2
1Islamic
Azad University, Ayatollah Amoli Branch, Amol, IRAN .P.O.Box
675.
2Department
of Environmental Science, Faculty of Natural Resources and
Marine Sciences, Tarbiat modares University, Imam Reza
Street, Noor, Iran B.O. Box: 46414-356.
*Corresponding author. E-mail:
mazyar.sharifzadeh@gmail.com,
maziarsharif@yahoo.com. Fax: +981212552789.
Accepted
8 August, 2008 |
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The fermentation kinetics of citric acid by Aspergillus
niger were studied in a batch system. A simple model was
proposed using the logistic equation for growth, the
Luedeking-Piret equation for citric acid production and
Luedeking-Piret-like equation for glucose consumption. The
model appeared to provide a reasonable description for each
parameter during the growth phase. The production of citric
acid by A. niger is growth-associated.
Key
words:
Kinetic
model, citric acid, Aspergillus niger,
Luedeking-Piret equation, apple pomace, growth-associated. |
