Citrate regulation of citric acid production in Aspergillus niger
نویسندگان
چکیده
منابع مشابه
Citric 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; ...
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Development of methodology for the recovery of citric acid from the fermented broth involves standardization of the various parameters to achieve maximum performance in terms of recovery and optimum conditions. The present investigation was carried out to study the purification of citric acid from fermented broth by calcium carbonate precipitation and subsequent acid hydrolysis. The parameters ...
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sucrose concentration of 60 g/l. Lower amounts of citric acids were found to be produced with other speeds (250-310 rpm).The oxygen flow rate of 1.0 lpm was observed to he most favorable flow rate giving maximum amount of Citric acid (26.6 g/l) with initial sucrose concentration of (60 g/l).. Lower Citric acids were found to be produced with other flow rates (1.5-2.5 lpm).
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Aconitase and NADand NADP-linked isocitric dehydrogenases were examined in two strains of Aspergillus niger. The mutant strain 72-44 produced higher yields of citric acid on the culture medium used than did the parent strain 7 2 4 . After growth for 22 hr on a medium in which citric acid did not accumulate, the amounts of each enzyme in the parent strain were approximately the same as those in ...
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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: FEMS Microbiology Letters
سال: 1977
ISSN: 0378-1097
DOI: 10.1016/0378-1097(77)90157-4