Statistical optimization of process parameters for the production of citric acid from oil palm empty fruit bunches
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)...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Academic Journals
2010
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| Subjects: | |
| Online Access: | http://irep.iium.edu.my/4022/ http://irep.iium.edu.my/4022/ http://irep.iium.edu.my/4022/1/CA-process-opt.pdf |
| Summary: | 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. |
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