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Polyhydroxyalkanoate production from anaerobically treated palm oil mill effluent by new bacterial strain Comamonas sp. EB172


Citation

Zakaria, Mohd Rafein and Tabatabaei, Meisam and Mohamad Ghazali, Farinazleen and Abd Aziz, Suraini and Shirai, Yoshihito and Hassan, Mohd Ali (2010) Polyhydroxyalkanoate production from anaerobically treated palm oil mill effluent by new bacterial strain Comamonas sp. EB172. World Journal of Microbiology and Biotechnology, 26 (5). pp. 767-774. ISSN 0959-3993; ESSN: 1573-0972

Abstract / Synopsis

A new isolate designated as strain EB172 was isolated from a digester treating palm oil mill effluent and was investigated by polyphasic taxonomic approach. The cells were rod-shaped, Gram-negative, non-pigmented, non-spore-forming and non-fermentative. Phylogenetic analysis using the 16S rRNA gene sequence showed that the strain clustered with the genus Comamonas. Its closest neighbours were the type strains Comamonas terrigena (96.8%), Comamonas koreensis (93.4%), Comamonas composti (92.9%), and Comamonas kerstersii (91.1%). The ability of the strain EB172 to produce polyhydroxyalkanoates (PHA) when supplied with organic acids made this bacterium unique among Comamonas species. The bacterial strain was clearly distinguished from all of the existing strains by phylogenetic analysis, fatty acid composition and a range of physiological and biochemical characteristics. The G+C content of the genomic DNA was 59.1 mol%. The strain showed good growth in acetic, propionic and n-butyric acids. Comamonas sp. EB172 produced 9.8 g/l of cell dry weight and accumulated 59 (wt%) of PHAs when supplemented with mixed organic acids from anaerobically treated palm oil mill effluent. It is evident from the genotypic, phenotypic data and ability to produce PHAs that strain EB172 represents a new strain in the genus Comamonas (GeneBank accession no. EU847238).


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Additional Metadata

Item Type: Article
Divisions: Faculty of Biotechnology and Biomolecular Sciences
Faculty of Food Science and Technology
DOI Number: https://doi.org/10.1007/s11274-009-0232-y
Publisher: Springer
Keywords: Comamonas sp.; Palm oil mill effluent; Polyhydroxyalkanoates; Phylogenetic; Taxonomy
Depositing User: Anas Yahaya
Date Deposited: 18 May 2011 09:12
Last Modified: 05 May 2016 03:43
Altmetrics: http://www.altmetric.com/details.php?domain=psasir.upm.edu.my&doi=10.1007/s11274-009-0232-y
URI: http://psasir.upm.edu.my/id/eprint/12393
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