Citric acid fermentation by mutant strain of Aspergillus niger GCMC-7using molasses based medium
نویسندگان
چکیده
منابع مشابه
Aconitase and citric acid fermentation by Aspergillus niger.
In view of the often-cited theory that citric acid accumulation is caused by an inhibition of aconitase activity, the equilibrium of the reaction of aconitase was investigated by comparing in vivo steady-state concentrations of citrate and isocitrate in Aspergillus niger grown under various citric acid-producing conditions. With the equilibrium catalyzed by the A. niger enzyme in vitro, similar...
متن کاملOptimisation of Citric Acid Production from a Novel Strain of Aspergillus niger by Submerged Fermentation
Fungi isolated from various rotten fruits and vegetables were screened for the capability of producing citric acid. Aspergillus niger (A. niger) was obtained in the decayed onion peels and denoted as KON13 and this fungi strain was used in the production of citric acid by submerged fermentation. Critical process parameters affecting the fermentative citric acid production were investigated, inc...
متن کاملPre-Treatment of Raw Sugarcane Molasses by Metal Complexing Agents for Improved Citric Acid Fermentation by Aspergillus Niger
The present study deals with the pre-treatment of sugar cane molasses for the enhanced production of citric acid by Aspergillus niger NG-4. Different metal complexing agents such as potassium ferrocyanide [K4Fe(CN)6] and ethylene diamine tetra acetic acid (EDTA) were also employed for molasses pre-treatment and the concentrations varied from 50-350 ppm. The maximum production of citric acid (36...
متن کاملCitric Acid Production by Aspergillus Niger*
the Stokes' equation (4). The anomalous appearance of the curves might suggest that a non-random sample had been selected, but examination of the frequencies of cells appearing in different size ranges reveals a normal distribution indicating that a random sample had been selected. The diameters of cells and the correspondent frequencies are: 3.5-2; 4.0-7; 4.5-10; 5.0-20; 5.5-17; 6.0-8; 6.5-2; ...
متن کاملProduction of citric acid by Aspergillus niger using cane molasses in a stirred fermentor
The present investigation deals with the kinetics of submerged citric acid fermentation by Aspergillus niger using blackstrap molasses as the basal fermentation media. A laboratory scale stirred fermentor of 15-L capacity having working volume of 9-L was used for cultivation process and nutritional analysis. Among the 10 stock cultures of Aspergillus niger, the strain GCBT7 was found to enhance...
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ژورنال
عنوان ژورنال: Electronic Journal of Biotechnology
سال: 2002
ISSN: 0717-3458,0717-3458
DOI: 10.2225/vol5-issue2-fulltext-5