Production of citric acid by Aspergillus niger immobilized in Detarium microcarpum matrix
| Autor: | Kareem, S. O., Oladipupo, I. O., Omemu, A. M., Babajide, J. M. |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2013 |
| Předmět: | |
| Zdroj: | Malaysian Journal of Microbiology, Vol 9, Iss 2, Pp 161-165 (2013) |
| Druh dokumentu: | article |
| ISSN: | 1823-8262 2231-7538 |
| Popis: | Aims: This study investigated the potential use of Detarium microcarpum as a support matrix for the immobilization offungal cell and its subsequent use in the production of citric acid.Methodology and results: Conidia of Aspergillus niger were immobilized on Detarium microcarpum matrix crosslinkedwith glutaraldehyde (2.5% v/v). Effects of various immobilized conditions on citric acid yield were determined. Citric acidproduction was optimum at 9% gel concentration, 5.0 mm bead size and 400 mg spore load. Higher citric acid yield (82g/L) was obtained by immobilized cells while free cells gave (61 g/L). Immobilized gels were stable for 15 days in thefermentation medium and retained about 75% of initial yield after five repeated cycles.Conclusion, significance and impact of study: This study therefore shows that D. microcarpum is a novel matrix forcell immobilization and will enhance production of citric acid in batch system. |
| Databáze: | Directory of Open Access Journals |
| Externí odkaz: |
|