Affiliation:
1. Department of Food Engineering, Faculty of Engineering, King Mongkut's Institute of Technology Ladkrabang
Abstract
Valorization of banana peel (BP) through solid state fermentation (SSF) was aimed<br />
in this research. The appropriate conditions of citric acid (CA) production by SSF of<br />
Aspergillus niger were investigated. Firstly, the optimum initial pH of the BP and the<br />
aeration rate were studied by conducting SSF in a 250-mL flask and 2-L glass column,<br />
respectively. It was found that the initial pH of the BP and aeration rates affected the CA<br />
production. The results showed that the initial pH of 5.0 and 1.0 vvm aeration were appropriate for the CA production of A. niger using BP as a substrate. The problem of rising temperature during SSF was found when applying the optimum condition to the SSF<br />
in the 20-L packed bed bioreactor (PBB), which caused a decrease in the CA production<br />
compared to that of the glass column. The cooling air jacket constructed to the PBB to<br />
remove the heat during the SSF helped increase the CA production from that in the PBB.<br />
The maximum CA production in the 20-L air-jacketed PBB was 124.0±19.2 mg g–1DS.
Publisher
Croatian Society of Chemical Engineers/HDKI
Subject
Process Chemistry and Technology,General Chemistry,Biochemistry
Cited by
5 articles.
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