Production of Citric Acid by Aspergillus niger Using Pineapple Waste
| Autor: | Kareem, S. O., Akpan, I., Alebiowu, O. O. |
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| Jazyk: | angličtina |
| Rok vydání: | 2010 |
| Předmět: | |
| Zdroj: | Malaysian Journal of Microbiology, Vol 6, Iss 2, Pp 161-165 (2010) |
| Druh dokumentu: | article |
| ISSN: | 1823-8262 2231-7538 |
| Popis: | A solid state fermentation was developed for citric acid production from pineapple waste by Aspergillus niger KS-7. The medium was supplemented with different concentration of glucose, sucrose, ammonium nitrate and ammonium phosphate. It was found that pineapple waste with 15% (w/v) sucrose and ammonium nitrate (0.25% w/v) gave the optimum citric acid secretion (60.61 g/kg) in the presence of methanol (2% v/v) when fermented for 5 days at 30 °C with the initial moisture content of 65%. The yield was more than 90% based on the amount of fermentable sugar consumed. These results present the use of pineapple peel as a cheap medium for the production of commercially valuable organic acid by A. niger. |
| Databáze: | Directory of Open Access Journals |
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