Influence of impeller speed on citric acid production and selected enzyme activities of the TCA cycle

1991 ◽  
Vol 7 (3) ◽  
pp. 221-225 ◽  
Author(s):  
T. Roukas
Keyword(s):  
Citric Acid ◽  
Enzyme Activities ◽  
Acid Production ◽  
Tca Cycle ◽  
Impeller Speed ◽  
Citric Acid Production ◽  
The Tca Cycle

Intracellular location of enzymes involved in citrate production by Aspergillus niger

1991 ◽  
Vol 37 (11) ◽  
pp. 823-827 ◽  
Author(s):  
Walter M. Jaklitsch ◽  
Christian P. Kubicek ◽  
Michael C. Scrutton
Keyword(s):  
Citric Acid ◽  
Aspergillus Niger ◽  
Key Words ◽  
Filamentous Fungi ◽  
Isocitrate Dehydrogenase ◽  
Enzyme Activities ◽  
Acid Production ◽  
Pyruvate Carboxylase ◽  
Citric Acid Production ◽  
Intracellular Location

The intracellular distribution and maximal activities of nine enzymes involved in the biosynthesis and degradation of citric acid in Aspergillus niger were determined under conditions of growth and of citric acid production. Under these conditions the intracellular location of the enzymes in most cases resembled that described for other filamentous fungi. Pyruvate carboxylase was found predominantly or exclusively in the cytosol. A single isoenzyme of NADP–isocitrate dehydrogenase was present, which appeared to be localised in the mitochondrion. No significant differences in maximal enzyme activities were observed except for NADP–isocitrate dehydrogenase, which showed decreased activity in production-phase mycelia. The results obtained support the scheme proposed by C. P. Kubicek for the intracellular organisation of citric acid formation but provide little evidence that this process is controlled at the level of the biosynthesis of any of the enzymes examined here. Key words: pyruvate carboxylase, citric acid production, enzyme compartmentation, Aspergillus niger.

scholarly journals The Effect of Lipids on Citric Acid Production by an Aspergillus niger Mutant

1963 ◽  
Vol 30 (3) ◽  
pp. 365-379 ◽  
Author(s):  
N. F. MILLIS ◽  
B. H. TRUMPY ◽  
B. M. PALMER
Keyword(s):  
Citric Acid ◽  
Aspergillus Niger ◽  
Acid Production ◽  
Citric Acid Production

scholarly journals Experimental Design as a Tool for the Development of Citric Acid Production by Yarrowia lipolytica Using Glycerol as a Feedstock

2013 ◽  
Vol 3 (8) ◽  
Author(s):  
Luana V. da Silva ◽  
Camila B. Tavares ◽  
Roberta dos R. Ribeiro ◽  
Fernando L. P. Pessoa ◽  
Maria Alice Z. Coelho ◽  
...  
Keyword(s):  
Citric Acid ◽  
Experimental Design ◽  
Yarrowia Lipolytica ◽  
Acid Production ◽  
Citric Acid Production

scholarly journals Determination of Optimum Composition of Fermentation Medium for Citric Acid Production from Watermelon Rinds using Response Surface Methodology

2017 ◽  
Vol 1 (1) ◽  
pp. 12-16
Author(s):  
Andrew Amenaghawon ◽  
◽  
Oluwatoba Salokun ◽  
Justina Okhonmina ◽  
Imuetinyan Egharevba ◽  
...  
Keyword(s):  
Response Surface Methodology ◽  
Citric Acid ◽  
Response Surface ◽  
Acid Production ◽  
Fermentation Medium ◽  
Optimum Composition ◽  
Citric Acid Production
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