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Biodegradation of benzo[a]pyrene by bacterial consortium isolated from mangrove sediment

Benzo[a]pyrene is a high-molecular-weight polycyclic aromatic hydrocarbon highly recalcitrant in nature and thus harms the ecosystem and/or human health. Therefore, its removal from the marine environment is crucial. This research focuses on benzo[a]pyrene degradation by using enriched bacterial iso...

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Main Authors:	Aziz, A., Agamuthu, Pariatamby, Alaribe, Frank Ogenna, Fauziah, Shahul Hamid
Format:	Article
Published:	Taylor & Francis 2018
Subjects:	Q Science (General) QH Natural history
Online Access:	http://eprints.um.edu.my/22411/ https://doi.org/10.1080/09593330.2017.1305455
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spelling	my.um.eprints.224112019-09-18T03:44:36Z http://eprints.um.edu.my/22411/ Biodegradation of benzo[a]pyrene by bacterial consortium isolated from mangrove sediment Aziz, A. Agamuthu, Pariatamby Alaribe, Frank Ogenna Fauziah, Shahul Hamid Q Science (General) QH Natural history Benzo[a]pyrene is a high-molecular-weight polycyclic aromatic hydrocarbon highly recalcitrant in nature and thus harms the ecosystem and/or human health. Therefore, its removal from the marine environment is crucial. This research focuses on benzo[a]pyrene degradation by using enriched bacterial isolates in consortium under saline conditions. Bacterial isolates capable of using benzo[a]pyrene as sole source of carbon and energy were isolated from enriched mangrove sediment. These isolates were identified as Ochrobactrum anthropi, Stenotrophomonas acidaminiphila, and Aeromonas salmonicida ss salmonicida. Isolated O. anthropi and S. acidaminiphila degraded 26% and 20%, respectively, of an initial benzo[a]pyrene concentration of 20 mg/L after 8 days of incubation in seawater (28 ppm of NaCl). Meanwhile, the bacterial consortium decomposed 41% of an initial 50 mg/L benzo[a]pyrene concentration after 8 days of incubation in seawater (28 ppm of NaCl). The degradation efficiency of benzo[a]pyrene increased to 54%, when phenanthrene was supplemented as a co-metabolic substrate. The order of biodegradation rate by temperature was 30°C > 25°C > 35°C. Our results suggest that co-metabolism by the consortium could be a promising biodegradation strategy for benzo[a]pyrene in seawater. Taylor & Francis 2018 Article PeerReviewed Aziz, A. and Agamuthu, Pariatamby and Alaribe, Frank Ogenna and Fauziah, Shahul Hamid (2018) Biodegradation of benzo[a]pyrene by bacterial consortium isolated from mangrove sediment. Environmental Technology, 39 (4). pp. 527-535. ISSN 0959-3330 https://doi.org/10.1080/09593330.2017.1305455 doi:10.1080/09593330.2017.1305455
institution	Universiti Malaya
building	UM Library
collection	Institutional Repository
continent	Asia
country	Malaysia
content_provider	Universiti Malaya
content_source	UM Research Repository
url_provider	http://eprints.um.edu.my/
topic	Q Science (General) QH Natural history
spellingShingle	Q Science (General) QH Natural history Aziz, A. Agamuthu, Pariatamby Alaribe, Frank Ogenna Fauziah, Shahul Hamid Biodegradation of benzo[a]pyrene by bacterial consortium isolated from mangrove sediment
description	Benzo[a]pyrene is a high-molecular-weight polycyclic aromatic hydrocarbon highly recalcitrant in nature and thus harms the ecosystem and/or human health. Therefore, its removal from the marine environment is crucial. This research focuses on benzo[a]pyrene degradation by using enriched bacterial isolates in consortium under saline conditions. Bacterial isolates capable of using benzo[a]pyrene as sole source of carbon and energy were isolated from enriched mangrove sediment. These isolates were identified as Ochrobactrum anthropi, Stenotrophomonas acidaminiphila, and Aeromonas salmonicida ss salmonicida. Isolated O. anthropi and S. acidaminiphila degraded 26% and 20%, respectively, of an initial benzo[a]pyrene concentration of 20 mg/L after 8 days of incubation in seawater (28 ppm of NaCl). Meanwhile, the bacterial consortium decomposed 41% of an initial 50 mg/L benzo[a]pyrene concentration after 8 days of incubation in seawater (28 ppm of NaCl). The degradation efficiency of benzo[a]pyrene increased to 54%, when phenanthrene was supplemented as a co-metabolic substrate. The order of biodegradation rate by temperature was 30°C > 25°C > 35°C. Our results suggest that co-metabolism by the consortium could be a promising biodegradation strategy for benzo[a]pyrene in seawater.
format	Article
author	Aziz, A. Agamuthu, Pariatamby Alaribe, Frank Ogenna Fauziah, Shahul Hamid
author_facet	Aziz, A. Agamuthu, Pariatamby Alaribe, Frank Ogenna Fauziah, Shahul Hamid
author_sort	Aziz, A.
title	Biodegradation of benzo[a]pyrene by bacterial consortium isolated from mangrove sediment
title_short	Biodegradation of benzo[a]pyrene by bacterial consortium isolated from mangrove sediment
title_full	Biodegradation of benzo[a]pyrene by bacterial consortium isolated from mangrove sediment
title_fullStr	Biodegradation of benzo[a]pyrene by bacterial consortium isolated from mangrove sediment
title_full_unstemmed	Biodegradation of benzo[a]pyrene by bacterial consortium isolated from mangrove sediment
title_sort	biodegradation of benzo[a]pyrene by bacterial consortium isolated from mangrove sediment
publisher	Taylor & Francis
publishDate	2018
url	http://eprints.um.edu.my/22411/ https://doi.org/10.1080/09593330.2017.1305455
_version_	1646210233806094336
score	13.211869

Biodegradation of benzo[a]pyrene by bacterial consortium isolated from mangrove sediment

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