Biodegradation Potentials of Polyaromatic Hydrocarbon (pyrene and phenanthrene) by Proteus Mirabilis isolated from an Animal Charcoal Polluted Site
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Date
2017
Authors
Obayoria, O.S
Salam, L.B
Oyetibo, G.O
Idowu, M
Amund, O.O
Journal Title
Journal ISSN
Volume Title
Publisher
Elservier
Abstract
Indiscriminate disposal of animal charcoal from skin and hides cottage industries often impact the environments
with toxic hydrocarbon components and thus require eco-friendly remedial strategies. A bacterial strain isolated
from a site polluted with animal charcoal was characterized, identified as Proteus mirabilis 10c, and studied for
ability to degrade pyrene and phenanthrene. The bacterium resisted 30 μg chloramphenicol, 10 μg ampicillin,
30 μg amoxicillin and 10 μg perfloxacin; while it utilized a number of polycyclic aromatic hydrocarbons and
cinnamic acid. Specific growth rate on pyrene and phenanthrene were 0.281 d−1 and 0.276 d−1, respectively.
Kinetics of degradation of pyrene was 87.92 mg l−1 in 30 days at the rate of 2.93 mg l−1 d−1, biodegradation
constant at 0.073 d−1 and half-life of 9.50 d. The corresponding values for phenanthrene degradation kinetics by
the bacterium were 90.12 mg l−1, 3.02 mg l−1 d−1, 0.079 d−1 and 8.77 d, respectively. Efficient degradation of
crude oil (92.3%) in chemically defined medium was evident with near-disappearance of most aromatic spectra
in 30 days. Considering its unique physiologies and broad specificities for aromatic and aliphatic hydrocarbons,
the bacterium has potentials for decommissioning environments contaminated with toxic components of animal
charcoal.
Description
Staff Publications
Keywords
Biodegradation , Polycyclic Cromatic Hydrocarbons , Animal Charcoal , Phenanthrene
Citation
Obayoria, O.S Et...al (2017) Biodegradation Potentials of Polyaromatic Hydrocarbon (pyrene and phenanthrene) by Proteus Mirabilis isolated from an Animal Charcoal Polluted Site .Biocatalysis and Agricultural Biotechnology, Vol.12, 78-84pp.