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Effect of o-Cresol, Resorcinol and Hydroquinone on Citric Acid Productivity by Aspergillus niger in Stirred Fermentor
Asian Journal of Chemistry,
Vol. 22 No. 1 (2010): Vol 22 Issue 1, 2010
Abstract
Effects of o-cresol, resorcinol and hydroquinone, which are toxic
chemicals, on citric acid biosynthesis and biomass in the artificial culture
setting of Aspergillus niger using batch fermenter are examined in the
most favourable fermentation conditions and a model is proposed.
According to this model, maximum citric acid concentration is 48.3 g L-1
in a culture that does not contain any toxic chemicals, whereas the maximum
concentrations obtained in cultures containing 15 mg L-1 o-cresol, 45 mg L-1
resorcinol and 35 mg L-1 hydroquinone are 86.7, 82.8 and 86.8 g L-1,
respectively. Moreover, addition of toxic chemicals to the culture reduces
fermentation time by 24 h.
chemicals, on citric acid biosynthesis and biomass in the artificial culture
setting of Aspergillus niger using batch fermenter are examined in the
most favourable fermentation conditions and a model is proposed.
According to this model, maximum citric acid concentration is 48.3 g L-1
in a culture that does not contain any toxic chemicals, whereas the maximum
concentrations obtained in cultures containing 15 mg L-1 o-cresol, 45 mg L-1
resorcinol and 35 mg L-1 hydroquinone are 86.7, 82.8 and 86.8 g L-1,
respectively. Moreover, addition of toxic chemicals to the culture reduces
fermentation time by 24 h.
Keywords
Fermenter
Citric acid
Aspergillus niger
Toxic chemicals.
SITKI ÇEVRIMLI*, B., YASAR†, A., & KARIPTAS‡, E. (2009). Effect of o-Cresol, Resorcinol and Hydroquinone on Citric Acid Productivity by Aspergillus niger in Stirred Fermentor. Asian Journal of Chemistry, 22(1), 699–704. Retrieved from https://asianpubs.org/index.php/ajchem/article/view/16696
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