Polycyclic Aromatic Hydrocarbons (Pah) in Vulcano Island (Aeolian Archipelago) Mud Utilized for Therapeutic Purpose

Culotta, Loredana; Gianguzza, Antonio; Mannino, Maria Rosaria; Orecchio, Santino

doi:10.1080/10406630701476023

Cited by 12 publications

(11 citation statements)

References 25 publications

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“…Aromatic compounds have been detected in sediments associated with hydrothermal vent sites and petroleum reservoirs (Simoneit and Lonsdale, 1982;Bazylinski et al, 1989;Mangani et al, 1991;Goetz and Jannasch, 1993;Magot et al, 2000;Culotta et al, 2007). Previous studies have also shown that benzoate can be oxidized to 14 CO 2 in hot sediments from the same general location in Vulcano, Italy, where F. placidus was isolated (Hafenbradl et al, 1996;.…”

Section: Introductionmentioning

confidence: 97%

Genome-scale analysis of anaerobic benzoate and phenol metabolism in the hyperthermophilic archaeon Ferroglobus placidus

et al. 2011

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Insight into the mechanisms for the anaerobic metabolism of aromatic compounds by the hyperthermophilic archaeon Ferroglobus placidus is expected to improve understanding of the degradation of aromatics in hot (>80° C) environments and to identify enzymes that might have biotechnological applications. Analysis of the F. placidus genome revealed genes predicted to encode enzymes homologous to those previously identified as having a role in benzoate and phenol metabolism in mesophilic bacteria. Surprisingly, F. placidus lacks genes for an ATP-independent class II benzoyl-CoA (coenzyme A) reductase (BCR) found in all strictly anaerobic bacteria, but has instead genes coding for a bzd-type ATP-consuming class I BCR, similar to those found in facultative bacteria. The lower portion of the benzoate degradation pathway appears to be more similar to that found in the phototroph Rhodopseudomonas palustris, than the pathway reported for all heterotrophic anaerobic benzoate degraders. Many of the genes predicted to be involved in benzoate metabolism were found in one of two gene clusters. Genes for phenol carboxylation proceeding through a phenylphosphate intermediate were identified in a single gene cluster. Analysis of transcript abundance with a whole-genome microarray and quantitative reverse transcriptase polymerase chain reaction demonstrated that most of the genes predicted to be involved in benzoate or phenol metabolism had higher transcript abundance during growth on those substrates vs growth on acetate. These results suggest that the general strategies for benzoate and phenol metabolism are highly conserved between microorganisms living in moderate and hot environments, and that anaerobic metabolism of aromatic compounds might be analyzed in a wide range of environments with similar molecular targets.

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Section: Introductionmentioning

confidence: 97%

Genome-scale analysis of anaerobic benzoate and phenol metabolism in the hyperthermophilic archaeon Ferroglobus placidus

et al. 2011

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“…The works of Culotta and Stracquadanio, who also touch upon the subject of organic compounds of vulcanic origin, indicate differences in PAHs composition in air, sediment and mud samples [37,41]. In his work, Stracquadanio places particular emphasis on the size of vulcanic dust fraction as a transport medium for individual PAHs compounds, hence identifying another factor that verifies deposition of post-eruption pollutants in the environment [37]. The results analysis is unfortunately very complicated, as other sources of PAHs can effectively increase concentrations of these compounds: forest fires, inflow of contaminated air masses from industrial areas, as well as possible local and regional emission sources, natural processes forming crude oil, bituminous shale and coal, synthesis by sea algae and biosynthesis by microorganisms [40] (Figure 7).…”

Section: Impact Of Volcano Eruption On the Occurrence Of Dioxin-like mentioning

confidence: 99%

“…One should also take into consideration the impact of photochemical processes (on non-adsorbed PAHs), degradation during the hot season, as well as deposition of some hydrocarbons, all of which may affect the percentage content of individual PAHs [29,49]. On the other hand, the most important source of PAHs in the troposphere involves combustion processes, such as forest fires, power plants, incinerators, as well as diesel and gas engine exhausts [37]. The works of Culotta and Stracquadanio, who also touch upon the subject of organic compounds of vulcanic origin, indicate differences in PAHs composition in air, sediment and mud samples [37,41].…”

Section: Impact Of Volcano Eruption On the Occurrence Of Dioxin-like mentioning

confidence: 99%

“…Figure 5 shows diagrams prepared on the basis of the data found in Table 3 to offer comparison with the data compiled for the purpose of this study. The diagrams show the percentage content of individual PAHs (including the number of rings) against total PAHs mass identified in the samples found after the volcano eruption: mud [33] and ash [37]. [45].…”

Section: Impact Of Volcano Eruption On the Occurrence Of Dioxin-like mentioning

confidence: 99%

“…On the other hand, the most important source of PAHs in the troposphere involves combustion processes, such as forest fires, power plants, incinerators, as well as diesel and gas engine exhausts [37]. The works of Culotta and Stracquadanio, who also touch upon the subject of organic compounds of vulcanic origin, indicate differences in PAHs composition in air, sediment and mud samples [37,41]. In his work, Stracquadanio places particular emphasis on the size of vulcanic dust fraction as a transport medium for individual PAHs compounds, hence identifying another factor that verifies deposition of post-eruption pollutants in the environment [37].…”

Section: Impact Of Volcano Eruption On the Occurrence Of Dioxin-like mentioning

confidence: 99%

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Impact of Volcanic Eruptions on the Occurrence of PAHs Compounds in the Aquatic Ecosystem of the Southern Part of West Spitsbergen (Hornsund Fjord, Svalbard)

Kozak

Ruman

Kosek

et al. 2017

Water

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Abstract:The paper presents changes in concentration levels of dioxin-like compounds that can be observed over the course of four study seasons in water samples collected from the Arctic watershed of Svalbard. The conducted analysis involved anthropogenic and natural factors that may affect the concentration of PAHs in the study samples of water. An attempt is made to indicate the emission source of the compounds being deposited and to identify the extent to which the substances under analysis actually affect the Arctic ecosystems. Moreover, the work employs the following: diagnostic ratios PAHs, air masses backward trajectory analysis, Lidar observations and land relief analysis in order to provide a multi-level interpretation of the obtained data. Natural environment constitutes a complex system of subtle correlations that need to be perceived as a dynamic medium, in which multi-faceted processes take place.

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The distribution of phthalate esters in indoor dust of Palermo (Italy)

Orecchio

Indelicato

Barreca

2013

Environ Geochem Health

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In this work, phthalic acid esters (PAEs): dimethyl phthalate (DMP), diethyl phthalate (DEP), di-n-butyl phthalate, benzyl butyl phthalate, bis(2-ethylhexyl) phthalate, and di-n-octyl phthalate in indoor dust (used as passive sampler) were investigated. The settled dust samples were collected from thirteen indoor environments from Palermo city. A fast and simple method using Soxhlet and GC–MS analysis has been optimized to identify and quantify the phthalates. Total phthalates concentrations in indoor dusts ranged from 269 to 4,831 mg/kg d.w. (d.w. = dry weight). The data show a linear correlation between total PAEs concentration and a single compound content, with the exclusion of the two most volatile components (DMP and DEP) that are present in appreciable amounts only in two samples. These results suggest that most of the PAEs identified in the samples of settled dust originate from the same type of material. This evidence indicates that, in a specific indoor environment, generally is not present only one compound but a mixture having over time comparable percentages of PAEs. Consequently, for routine analyses of a specific indoor environment, only a smaller number of compounds could be determined to value the contamination of that environment. We also note differences in phthalate concentrations between buildings from different construction periods; the total concentration of PAEs was higher in ancient homes compared to those constructed later. This is due to a trend to reduce or remove certain hazardous compounds from building materials and consumer goods. A linear correlation between total PAEs concentration and age of the building was observed (R = 0.71).

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Polycyclic Aromatic Hydrocarbons (Pah) in Vulcano Island (Aeolian Archipelago) Mud Utilized for Therapeutic Purpose

Cited by 12 publications

References 25 publications

Genome-scale analysis of anaerobic benzoate and phenol metabolism in the hyperthermophilic archaeon Ferroglobus placidus

Genome-scale analysis of anaerobic benzoate and phenol metabolism in the hyperthermophilic archaeon Ferroglobus placidus

Impact of Volcanic Eruptions on the Occurrence of PAHs Compounds in the Aquatic Ecosystem of the Southern Part of West Spitsbergen (Hornsund Fjord, Svalbard)

The distribution of phthalate esters in indoor dust of Palermo (Italy)

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