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Microbiology Research Journal International, 2456-7043,Vol.: 22, Issue.: 4


Microbial Response to Varying Concentrations of Crude Oil Pollution of Agricultural Soils in Ondo State, Nigeria


Felix Adeleke Ikuesan1*

1Department of Microbiology, The Federal University of Technology, P.M.B. 704, Akure, Ondo State, Nigeria.

Article Information
(1) Nalan Turkoglu, Associate Professor, Department of Horticultural, Van Yuzuncu Yil University, Van, Turkey.
(2) Lachhman Das Singla, Professor, Department of Veterinary Parasitology, College of Veterinary Science, Guru Angad Dev Veterinary and Animal Sciences University, India.
(1) Pranab Roy, Haldia Institute of Technology, India.
(2) Hanan E.-S. Ali, Egyptian Petroleum Research Institute, Egypt.
Complete Peer review History: http://www.sciencedomain.org/review-history/22610


This research investigated the effects of varying concentrations of crude oil on the population of crude oil degrading microorganisms in crude oil polluted agricultural soils from Igodan- Lisa, Oba-Ile and Ido-Ani areas of Ondo State, Nigeria. The soil samples were exposed to 1- 4% (w/w) crude oil and analyzed monthly for six periods using standard microbiological techniques for the cultivation and enumeration of crude oil degrading bacteria and fungi. Results indicated that the crude oil degrading microbial populations were significantly altered. The population of crude oil degrading microbes were higher (1.03 x 105 - 1.10 x 106 cfu/g for bacteria and 1.07 x 104 – 8.67 x 105 sfu/g for fungi) in polluted than unpolluted (1.53 x 104 – 9.40 x 105 cfu/g for bacteria and 1.17 x 103 – 5.17 x 105 sfu/g for fungi) soils and also varied with increase in the amount of crude oil spilled and time. The mean count indicated that the microbiological status of the soil samples were not negatively impacted at 1-4% crude oil contamination and the effect on soil micro flora is a function of both concentration and contact time.

Keywords :

Varying concentrations; crude oil; agricultural soils; microbial population; micro flora; contact time.

Full Article - PDF    Page 1-8

DOI : 10.9734/MRJI/2017/38053

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