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Respiratory Activity of Aspergillus niger W78B during Gluconic and Citric Acid Biosynthesis
Podgorski, W., Gruszka, R. and Lesniak, W. Respiratory Activity of Aspergillus niger W78B during Gluconic and Citric Acid Biosynthesis Chemical Papers, Vol.57, No. 1, 2003, 35-38
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Document type:
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Článok z časopisu / Journal Article |
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Collection:
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Chemical papers
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| Author(s) |
Podgorski, W.
Gruszka, R.
Lesniak, W.
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| Title |
Respiratory Activity of Aspergillus niger W78B during Gluconic and Citric Acid Biosynthesis
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| Journal name |
Chemical Papers
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| Publication date |
2003
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| Year available |
2003
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| Volume number |
57
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| Issue number |
1
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| ISSN |
0366-6352
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| Start page |
35
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| End page |
38
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| Place of publication |
Poland
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| Publisher |
Versita
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| Collection year |
2003
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| Language |
english
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| Subject |
290000 Engineering and Technology
290100 Industrial Biotechnology and Food Sciences
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| Abstract/Summary |
Based on experiments carried out on synthetic media with saccharose andglucose, the activity of Aspergillus niger W78B strain with respect togluconic and citric acid biosynthesis was correlatedwith oxygen consumption andcarbon dioxide evolution by the microorganisms (gases exchange).The strainrevealed a high eficiency of substrate conversion to gluconic and citric acid,giving ayield factor of product on substrate, YP/S, close to 1and 0.8, respectively. The product formationindicated 5 times higher rate ofgluconate than citrate synthesis. It was caused by almost 1.5 timeshighervalues of speci_c oxygen uptake and 3 times lower demand of microorganism cellson oxygenin the case of gluconic acid synthesis.
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