title: Gluconic acid production under varying fermentation conditions byAspergillus niger
creator: Singh, Om V
creator: Jain, R K
creator: Singh, Rajesh P
subject: TP Chemical technology
description: The production of gluconic acid with respect to varying substrate concentrations in  submerged (SmF), semisolid-state (SmSF), surface (SF), and solid-state surface (SSF) fermentations  was analyzed. Under the various fermentation conditions the biomass and specific growth rate varied  with different concentrations of glucose. The highest level of gluconic acid (106.5g dm�3) with 94.7%  yield was obtained under SSF conditions. In all cases the maximumdegree of gluconic acid conversion  was observed at on initial substrate concentration of 120g dm�3. The rate of glucose uptake increased  on increasing the initial glucose concentration and glucose utilization was observed to be highest  (89–94%) in the SmSF process and was comparable with the SSF and SF processes. The maximumrate  of cell growth was obtained in all processes at an initial glucose concentration of 120g dm�3. The  gluconic acid production and change in pH were analyzed at varying time intervals and it was observed  that the SmF and SmSF processes were completed within 6 days of incubation whereas the highest  yield was observed after 12 days of incubation and continued thereafter in the SSF process.  # 2003 Society of Chemical Industry
publisher: http://onlinelibrary.wiley.com/doi/10.1002/jctb.748/pdf
date: 2003
type: Article
type: PeerReviewed
format: application/pdf
identifier: http://crdd.osdd.net/open/938/1/jain2003.pdf
relation: http://dx.doi.org/10.1002/jctb.748
identifier:   Singh, Om V and Jain, R K and Singh, Rajesh P  (2003) Gluconic acid production under varying fermentation conditions byAspergillus niger.  Journal of Chemical Technology & Biotechnology, 78 (2-3).  pp. 208-212.  ISSN 0268-2575     
relation: http://crdd.osdd.net/open/938/