Utilization of dates in the fermentative formation of citric acid by Yarrowia lipolytica
| Autor: | Abou-Zeid A. Abou-Zeid, Samir M. Khoja |
|---|---|
| Rok vydání: | 1993 |
| Předmět: |
chemistry.chemical_classification
biology Yarrowia General Medicine biology.organism_classification Hydrolysate Yeast Amino acid carbohydrates (lipids) chemistry.chemical_compound Biochemistry chemistry Oxaloacetic acid Fermentation Food science General Agricultural and Biological Sciences Sugar Citric acid |
| Zdroj: | Zentralblatt für Mikrobiologie. 148:213-221 |
| ISSN: | 0232-4393 |
| DOI: | 10.1016/s0232-4393(11)80093-4 |
| Popis: | Summary Yarrowia lipolytica NRRL Y-1095 was found to be the most potent organism for citric acid formation. Utilization of different Barni date-coat sugar extract concentrations in the fermentation medium as carbon source was found to be good carbon in concentration of 25 mg/ml. Date-seed hydrolysate as nitrogen source for citric acid formation was suitable due to the presence of miscellaneous nitrogen sources, especially amino acids. The yield of citric acid was increased with the increase of phosphorus concentration reaching its maximum when the medium was supplemented with about 1.0 mg KH 2 PO 4 /ml. On using different oxaloacetic acid concentrations in the fermentation medium, it was found that citric acid was increased with the increase of oxaloacetic acid concentration reaching its maximum when the medium was supplemented with 0.4 mg/ml. |
| Databáze: | OpenAIRE |
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