QSPR models for prediction of the soil sorption coefficient (log KOC) values of 209 polychlorinatedtrans-azobenzenes (PCt-ABs)

Wilczyńska-Piliszek, Agata J.; Piliszek, Sławomir; Falandysz, Jerzy

doi:10.1080/10934529.2012.646138

Cited by 6 publications

(1 citation statement)

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“…The soil organic carbonwater partitioning coeffi cient (K OC ), that refl ects the ratio between the quantity of the compound absorbed in the soil (normalized to organic carbon content) and the concentration in water has been used in predicting the mobility and bioavailability of organic soil contaminants. Low K OC values correlate to more mobile organic chemicals and higher bioavailability (Wilczyńska-Piliszek et al 2012 ) (Table 1 ).…”

Section: Introductionmentioning

confidence: 99%

Metabolic Pathways for Degradation of Aromatic Hydrocarbons by Bacteria

Ladino-Orjuela

Gomes

Silva

et al. 2016

Reviews of Environmental Contamination and Toxicology

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The aim of this review was to build an updated collection of information focused on the mechanisms and elements involved in metabolic pathways of aromatic hydrocarbons by bacteria. Enzymes as an expression of the genetic load and the type of electron acceptor available, as an environmental factor, were highlighted. In general, the review showed that both aerobic routes and anaerobic routes for the degradation of aromatic hydrocarbons are divided into two pathways. The first, named the upper pathways, entails the route from the original compound to central intermediate compounds still containing the aromatic ring but with the benzene nucleus chemically destabilized. The second, named the lower pathway, begins with ring de-aromatization and subsequent cleavage, resulting in metabolites that can be used by bacteria in the production of biomass. Under anaerobic conditions the five mechanisms of activation of the benzene ring described show the diversity of chemical reactions that can take place. Obtaining carbon and energy from an aromatic hydrocarbon molecule is a process that exhibits the high complexity level of the metabolic apparatus of anaerobic microorganisms. The ability of these bacteria to express enzymes that catalyze reactions, known only in non-biological conditions, using final electron acceptors with a low redox potential, is a most interesting topic. The discovery of phylogenetic and functional characteristics of cultivable and noncultivable hydrocarbon degrading bacteria has been made possible by improvements in molecular research techniques such as SIP (stable isotope probing) tracing the incorporation of (13)C, (15)N and (18)O into nucleic acids and proteins. Since many metabolic pathways in which enzyme and metabolite participants are still unknown, much new research is required. Therefore, it will surely allow enhancing the known and future applications in practice.

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Section: Introductionmentioning

confidence: 99%