Biodegradación del explosivo tetranitrato de pentaeritritol (PETN) por bacterias aisladas  de ambientes mineros

Durán, Yerson; Andrade, Christian; Martínez, Alelí Morales; Santillan, Tito Sánchez; Cruz, Fernando de la; Ramírez, Pablo

doi:10.15381/rpb.v20i2.2678

Cited by 4 publications

(1 citation statement)

References 28 publications

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“…;White et al 1996;Zhuang et al 2012;Duran et al 2013). Our results rea rm these observations and suggest this phenomenon is rather general.…”

supporting

confidence: 89%

Bacteria isolated from explosive contaminated environments transform pentaerythritol tetranitrate (PETN) under aerobic and anaerobic conditions

Avila-Arias,

Casallas,

Arbeli

et al. 2023

Letters in Applied Microbiology

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Pentaerythritol tetranitrate (PETN) is a nitrate ester explosive that may be persistent, with scarce reports on its environmental fate and impacts. Our main objective was to isolate and characterize bacteria that transform PETN under aerobic and anaerobic conditions. Biotransformation of PETN (100 mg L−1) was evaluated using mineral medium with (M+C) and without (M-C) additional carbon source under aerobic conditions, and with additional carbon source under anaerobic conditions. Here we report on the isolation of 12 PETN transforming cultures (4 pure and 8 co-cultures) from environmental samples collected at an explosive manufacturing plant. The highest transformation of PETN was observed for cultures in M+C under aerobic conditions, reaching up to 91±2% in 2 days. Under this condition, PETN biotransformation was observed in conjunction with the release of nitrites and bacterial growth. No substantial transformation of PETN (<45%) was observed during 21 days in M-C under aerobic conditions. Under anaerobic conditions, five cultures could transform PETN (up to 52±13%) as the sole nitrogen source, concurrent with the formation of two unidentified metabolites. PETN-transforming cultures belonged to Alphaproteobacteria, Betaproteobacteria, Gammaproteobacteria and Actinobacteria. In conclusion, we isolated 12 PETN-transforming cultures belonging to diverse taxa suggesting that PETN transformation is phylogenetically widespread.

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“…;White et al 1996;Zhuang et al 2012;Duran et al 2013). Our results rea rm these observations and suggest this phenomenon is rather general.…”

supporting

confidence: 89%

Bacteria isolated from explosive contaminated environments transform pentaerythritol tetranitrate (PETN) under aerobic and anaerobic conditions

Avila-Arias,

Casallas,

Arbeli

et al. 2023

Letters in Applied Microbiology

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Bacillus: As Bioremediator Agent of Major Environmental Pollutants

Singh

2016

Bacilli and Agrobiotechnology

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Bacteria isolated from explosive contaminated environments transform pentaerythritol tetranitrate (PETN) under aerobic and anaerobic conditions

Avila-Arias

Casallas

Arbeli

et al. 2023

Preprint

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Pentaerythritol tetranitrate (PETN) is a nitrate ester explosive, true xenobiotic, recalcitrant and persistent compound in the environment. Our main objective was to isolate bacteria from environmental samples collected at an explosive manufacturing plant with the capacity to transform PETN (100 mg L− 1) under aerobic and/or anaerobic conditions. Biotransformation of PETN was evaluated using mineral medium without (M-C) and with additional carbon (M + C) source under aerobic conditions, and with additional carbon source under anaerobic conditions. Here we report on 12 cultures (4 pure and 8 co-cultures) with the capacity to transform PETN. The highest transformation of PETN was observed for cultures in M + C under aerobic conditions, reaching up to 91 ± 2% in 2 days. Under this condition, PETN biotransformation was observer in conjunction with the release of nitrites and bacterial growth, measured as optical density and total proteins. No substantial transformation of PETN (< 45%) was observed during 21 days in M-C under aerobic conditions. Under anaerobic conditions, five cultures reached up to 52 ± 13% PETN biotransformation in 160 days, concurrent with the formation of two unidentified metabolites. PETN-transforming cultures belonged to Alphaproteobacteria, Betaproteobacteria, Gammaproteobacteria and Actinobacteria. In conclusion, we isolated 12 PETN-transforming cultures belonging to diverse taxa suggesting that PETN transformation is phylogenetically widespread.

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Biodegradación del explosivo tetranitrato de pentaeritritol (PETN) por bacterias aisladas de ambientes mineros

Abstract: es_ES), que permite el uso no comercial, distribución y reproducción en cualquier medio, siempre que la obra original sea debidamente citadas. Para uso comercial, por favor póngase en contacto con

Cited by 4 publications

References 28 publications

Bacteria isolated from explosive contaminated environments transform pentaerythritol tetranitrate (PETN) under aerobic and anaerobic conditions

Bacteria isolated from explosive contaminated environments transform pentaerythritol tetranitrate (PETN) under aerobic and anaerobic conditions

Bacillus: As Bioremediator Agent of Major Environmental Pollutants

Bacteria isolated from explosive contaminated environments transform pentaerythritol tetranitrate (PETN) under aerobic and anaerobic conditions

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