Sankpal, N. V. ; Joshi, A. P. ; Sutar, I. I. ; Kulkarni, B. D. (1999) Continuous production of gluconic acid by Aspergillus niger immobilized on a cellulosic support: study of low pH fermentative behaviour of Aspergillus niger Process Biochemistry, 35 (3-4). pp. 317-325. ISSN 0032-9592
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Official URL: http://linkinghub.elsevier.com/retrieve/pii/S00329...
Related URL: http://dx.doi.org/10.1016/S0032-9592(99)00074-6
Abstract
Bioconversion of glucose to gluconic acid at low pH using Aspergillus niger immobilized on cellulose fabric was investigated. Glucose solution (100 g l-1) was made to flow through capillaries of a vertical fabric support, used for immobilization and is oxidized to gluconic acid at the interface. Conditions of temperature, humidity, airflow, and glucose feed rate have been optimized. The system could be run continuously for a period of 61 days utilizing the entire available glucose. The emerging broth contained a product concentration of 120-140 g l-1 of gluconic acid which is higher than the expected [maximum of 109 g gluconic acid 100 g glucose-1] as a result of evaporative concentration during the downward flow.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Elsevier Science. |
| Keywords: | Aspergillus niger; Immobilization; Cellulose Support; Gluconic Acid; Sporulation Inhibition; Continuous Fermentation |
| ID Code: | 17206 |
| Deposited On: | 16 Nov 2010 08:13 |
| Last Modified: | 06 Jun 2011 09:24 |
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