Selection of a hyperproducing strain of Aspergillus niger for biosynthesis of citric acid on unusual carbon substrates
Language English Country United States Media print
Document type Comparative Study, Journal Article
PubMed
2199351
DOI
10.1007/bf02820770
Knihovny.cz E-resources
- MeSH
- Aspergillus niger metabolism MeSH
- Citrates metabolism MeSH
- Culture Media metabolism MeSH
- Citric Acid MeSH
- Microbiological Techniques MeSH
- Selection, Genetic MeSH
- Carbon metabolism MeSH
- Publication type
- Journal Article MeSH
- Comparative Study MeSH
- Names of Substances
- Citrates MeSH
- Culture Media MeSH
- Citric Acid MeSH
- Carbon MeSH
Several tens of mutants were obtained by UV irradiation of a spore suspension of Aspergillus niger. Producers yielding large amounts of citric acid were selected on a modified Czapek agar containing methyl red as pH indicator. After a submerged cultivation in flasks with baffles, a mutant characterized by yellow pigmentation on wort agar and by yields of citric acid up to 74.6% in the medium containing glucose was chosen from 130 isolates tested.
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