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Biodegradation of palm kernel cake by cellulolytic and hemicellulolytic bacterial cultures through solid state fermentation

Alshelmani, Mohamed Idris and Loh, Teck Chwen and Foo, Hooi Ling and Lau, Wei Hong and Sazili, Awis Qurni (2014) Biodegradation of palm kernel cake by cellulolytic and hemicellulolytic bacterial cultures through solid state fermentation. The Scientific World Journal, 2014 . art. no. 729852. pp. 1-8. ISSN 2356-6140; ESSN: 1537-744X

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Official URL: http://dx.doi.org/10.1155/2014/729852

Abstract

Four cellulolytic and hemicellulolytic bacterial cultures were purchased from the Leibniz Institute DSMZ-German Collection of Microorganisms and Cell Culture (DSMZ) and the American Type Culture Collection (ATCC). Two experiments were conducted; the objective of the first experiment was to determine the optimum time period required for solid state fermentation (SSF) of palm kernel cake (PKC), whereas the objective of the second experiment was to investigate the effect of combinations of these cellulolytic and hemicellulolytic bacteria on the nutritive quality of the PKC. In the first experiment, the SSF was lasted for 12 days with inoculum size of 10% (v/w) on different PKC to moisture ratios. In the second experiment, fifteen combinations were created among the four microbes with one untreated PKC as a control. The SSF lasted for 9 days, and the samples were autoclaved, dried, and analyzed for proximate analysis. Results showed that bacterial cultures produced high enzymes activities at the 4th day of SSF, whereas their abilities to produce enzymes tended to be decreased to reach zero at the 8th day of SSF. Findings in the second experiment showed that hemicellulose and cellulose was significantly (P < 0.05) decreased, whereas the amount of reducing sugars were significantly (P < 0.05) increased in the fermented PKC (FPKC) compared with untreated PKC.

Item Type:Article
Keyword:Solid state fermentation (SSF); Palm kernel cake (PKC); Cellulolytic; Hemicellulolytic bacteria
Faculty or Institute:Faculty of Agriculture
Faculty of Biotechnology and Biomolecular Sciences
Institute of Bioscience
Institute of Tropical Agriculture
Publisher:Hindawi Publishing Corporation
DOI Number:10.1155/2014/729852
ID Code:36651
Deposited By: Nabilah Mustapa
Deposited On:04 Sep 2015 20:51
Last Modified:15 Feb 2016 16:40

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