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International Journal of Environment Science and Technology
Center for Environment and Energy Research and Studies (CEERS)
ISSN: 1735-1472
EISSN: 1735-2630
Vol. 12, No. 9, 2015, pp. 2801-2808
Bioline Code: st15262
Full paper language: English
Document type: Research Article
Document available free of charge

International Journal of Environment Science and Technology, Vol. 12, No. 9, 2015, pp. 2801-2808

 en Evaluation of bioremediation potential and biopolymer production of pseudomonads isolated from petroleum hydrocarbon-contaminated areas
Goudarztalejerdi, A.; Tabatabaei, M.; Eskandari, M. H.; Mowla, D. & Iraji, A.

Abstract

Bacteria are diverse and abundant in soils, but only a few bacteria have known to grow on hydrocarboncontaminated areas and utilize complex carbon source such as crude oil for the synthesis of polyhydroxyalkanoate (bioremediation potential and the ability to produce important biopolymers). Among 32 samples collected from several sites of petroleum refinery soil and oily sludge of Iranian southwestern refineries, 45 oil-degrading pseudomonads were identified, and 33 % of the isolated Pseudomonas check for this species in other resources strains were able to produce polyhydroxyalkanoate using Gachsaran crude oil (2 % v/v) as carbon source. The repeated monomer composition of the copolymer produced from Gachsaran crude oil was determined by gas chromatography/ mass spectrometry. The produced monomers composites contained: C8 (3-hydroxyoctanoate), C10 (3- hydroxydecanoate), C12 (2-hydroxydodecanoate), C14 (3- hydroxytetradecanoate), and C16 (3-hydroxydecahexanoate), which are known as biopolymers. This study indicates oil-contaminated areas can be important sources for polyhydroxyalkanoate producers which can be used for the bioremediation of crude-oil-polluted sites; also polyhydroxyalkanoate has a functional role in bacterial survival and stress tolerance in the toxic environments and poor nutrient availability.

Keywords
Biopolymers; Bioremediation; Polyhydroxyalkanoate; Pseudomonads

 
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