نتایج جستجو برای: heavy metal resistance bacteria

تعداد نتایج: 829545  

2013
Ademola O. Olaniran Adhika Balgobind Balakrishna Pillay

Co-contamination of the environment with toxic chlorinated organic and heavy metal pollutants is one of the major problems facing industrialized nations today. Heavy metals may inhibit biodegradation of chlorinated organics by interacting with enzymes directly involved in biodegradation or those involved in general metabolism. Predictions of metal toxicity effects on organic pollutant biodegrad...

2017
Agustina Undabarrena Juan A. Ugalde Michael Seeger Beatriz Cámara

Streptomyces sp. H-KF8 is an actinobacterial strain isolated from marine sediments of a Chilean Patagonian fjord. Morphological characterization together with antibacterial activity was assessed in various culture media, revealing a carbon-source dependent activity mainly against Gram-positive bacteria (S. aureus and L. monocytogenes). Genome mining of this antibacterial-producing bacterium rev...

Azhdarpoor , A*, Dehghani , M, Hoseini , R,

Background & objectives: The presence of heavy metals in urban sewage sludge limits its use as a soil modifier. The purpose of this study was to remove heavy metals (Cu, Zn, Cd and Pb) from urban sewage sludge using Acidophilic Thiobacillus ferrooxidans bacteria. Methods: In this experimental study, the sludge samples were collected from Shiraz wastewater treatment plant. Bioleaching tests were...

2012
Agostinho A. Lima de Silva Márcia A. Ribeiro de Carvalho Sérgio A. L de Souza Patrícia M. Teixeira Dias Renato G. da Silva Filho Carmen S. de Meirelles Saramago Cleonice A. de Melo Bento Ernesto Hofer

Samples of sewage from a university hospital and a chemistry technical school were analysed for the percentage of bacterial tolerance to chromium (Cr), silver (Ag) and mercury (Hg). Additionally, we investigated the effect of these metals on pigmentation and on some enzymatic activities of the metal tolerant strains isolated, as well as antimicrobial resistance in some metal tolerant Enterobact...

Journal: :Applied and environmental microbiology 1996
T Pennanen A Frostegard H Fritze E Baath

The effects of long-term heavy metal deposition on microbial community structure and the level of bacterial community tolerance were studied along two different gradients in Scandinavian coniferous forest soils. One was near the Harjavalta smelter in Finland, and one was at Ronnskar in Sweden. Phospholipid fatty acid (PLFA) analysis revealed a gradual change in soil microbial communities along ...

2014
Thanapon Sangvanich Jingga Morry Cade Fox Worapol Ngamcherdtrakul Shaun Goodyear David Castro Glen E. Fryxell Raymond S. Addleman Anne O. Summers Wassana Yantasee

We have developed a thiol-modified nanoporous silica material (SH-SAMMS) as an oral therapy for the prevention and treatment of heavy metal poisoning. SH-SAMMS has been reported to be highly efficient at capturing heavy metals in biological fluids and water. Herein, SH-SAMMS was examined for efficacy and safety in both in vitro and in vivo animal models for the oral detoxification of heavy meta...

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