IIUM Repository

Statistical optimization of process parameters for the production of citric acid from oil palm empty fruit bunches

Bari, Md. Niamul and Alam, Md. Zahangir and Muyibi, Suleyman Aremu and Jamal, Parveen and Al-Mamun, Abdullah (2010) Statistical optimization of process parameters for the production of citric acid from oil palm empty fruit bunches. African Journal of Biotechnology, 9 (4). pp. 554-563. ISSN 1684–5315

[img] PDF (Statistical optimization of process parameters for the production) - Published Version
Restricted to Repository staff only

Download (185kB) | Request a copy


In this study, optimization of process parameters such as moisture content, incubation temperature and initial pH (fixed) for the improvement of citric acid production from oil palm empty fruit bunches through solid state bioconversion was carried out using traditional one-factor-at-a-time (OFAT) method and response surface methodology (RSM). The possible optimum level of moisture content, incubation temperature, and initial pH were found from the OFAT study to be 70%, 30 - 32oC and 5.5 - 8, respectively. The optimum moisture content of 70.3% (v/w) and incubation temperature of 33.1°C with initial pH of 6.5 gave the maximum production of citric acid (369.16 g/kg of dry EFB). The analysis of variance (ANOVA) of the statistical optimization using central composite design showed that moisture content (p<0.001) and incubation temperature (p<0.0001) as well as the interaction of these two parameters were highly significant for the citric acid production.

Item Type: Article (Journal)
Additional Information: 4157/4022
Uncontrolled Keywords: citric acid, process condition, optimization, solid state bioconversion, Aspergillus niger and central composite design (CCD)
Subjects: T Technology > TP Chemical technology
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button): Kulliyyah of Engineering
Kulliyyah of Engineering > Department of Biotechnology Engineering
Depositing User: Dr. Md. Zahangir Alam
Date Deposited: 30 Sep 2011 15:08
Last Modified: 24 Oct 2011 16:10
URI: http://irep.iium.edu.my/id/eprint/4022

Actions (login required)

View Item View Item


Downloads per month over past year