Biodegradation of PAHs in �Pristine� Soils from Different Climatic Regions

Bioprospecting fungal diversity from crude oil infiltrate soil of Assam, India’s Northeast

“…The water holding capacity in the present study is between 52 to 64% which was at par to the earlier finding (Vadali 2001). The amount of crude oil in soil is largely dependent on soil physical, chemical or biological processes The removal of crude oil from the soil depends on soil type, soil organic matter content, soil minerals, the physicochemical properties of the individual PAH, soil temperature and moisture, redox potential, nutrients availability, presence and activity of degrading microorganisms and bioavailability of the PAH to degrading microorganisms (Meijer et al 2002, Nam et al 2008, Okere & Semple 2012. The variations in the amount of crude oil may be due to leaching phenomenon, volatilization or photo-oxidation (Wilcke et al 1999).…”

Polycyclic aromatic hydrocarbon fingerprints in the Pichavaram mangrove–estuarine sediments, southeastern India

“…Firstly, organic matter in mangrove sediments was mainly derived from higher terrestrial sources (mainly in situ mangrove vegetation) or riverine material (Ranjan et al, 2011). During sediment transport, LMW PAHs degraded easily due to solubilization and volatilization processes (Christensen and Arora, 2007;Tian et al, 2008a;Okere and Semple, 2012) raising the concentration of HMW PAHs. Secondly, biodegradation preferentially depleted the LMW PAHs over HMW PAHs (Cerniglia, 1992;Tian et al, 2008a;Lewis et al, 2009).…”

“…The retention and preservation of PAHs in sediments depend on a number of factors including soil type (mineral and organic matter content), physico-chemical properties of individual PAHs, soil temperature and moisture, redox-potential, availability of nutrients, and microbial activity (Okere and Semple, 2012). In this study, we traced the distribution of organic carbon (OC) concentrations and total PAH (ΣPAH) fluxes between different sites on spatial and temporal scales (Figs.…”

Implications of Benzoate Induced Alterations in Cell Morphology and Physiology in Pseudomonas aeruginosa TMR2.13 for Potential Application in Bioremediation and Monitoring Approaches

“…After an incubation period of 15 min, the absorbance was measured at 530 nm. Nitrate concentration was estimated using KNO 3 as the standard (0-500 µM).…”

“…Hydrocarbon contamination particularly that derived from petroleum products and other anthropogenic activities is a major cause of concern in the marine environment and has therefore garnered interest in bioremediation studies [1][2][3][4]. Environments rich in hydrocarbons particularly coastal and estuarine ecosystems generally have a high nitrate load [5].…”