Base de dados : MEDLINE
Pesquisa : D01.268.556.175 [Categoria DeCS]
Referências encontradas : 12045 [refinar]
Mostrando: 1 .. 10   no formato [Detalhado]

página 1 de 1205 ir para página                         

  1 / 12045 MEDLINE  
              next record last record
seleciona
para imprimir
Fotocópia
[PMID]:29446294
[Au] Autor:Efimova NV; Rukavishnikov VS; Pankov VA; Perezhogin AN; Shayakhmetov SF; Meshchakova NM; Lisetskaya LG
[Ti] Título:[Assessment of carcinogenic risks to workers of the main enterprises of the Irkutsk region].
[So] Source:Gig Sanit;95(12):1163-7, 2016.
[Is] ISSN:0016-9900
[Cp] País de publicação:Russia (Federation)
[La] Idioma:rus
[Ab] Resumo:The purpose of research is the assessment of the individual cancer risk (ICR) for workers of the basic occupations in key branches of industry of the Irkutsk region. There was executed the calculation of ICR levels for workers of the basic occupations of the aircraft industry, aluminum smelters and vinyl chloride production plants. The estimation of the exposure for workers was carried out according to long-term time-weighted average concentrations in the air of the working area, for the population - on annual average concentrations in the ambient air. To assess the risk that is not associated with the profession, the dose was calculated for the period of life (70 years). When calculating the toxicant doses in the working area there were used the "standard" indices ofpulmonary ventilation for adults, body weight, the work experience in the contact with carcinogens of 30 years, the number of days in the contact of 240, the duration of the working time 8 or 12 hours (in accordance with the working hours) duration. ICR for the Irkutsk population amounted of 3.08E-04, in Shelekhov - 4.8E-05, Sayansk - 1.1E-05. The amount of risk depends on the content offormaldehyde in all territories and chromium VI in cities of Irkutsk and Shelekhov. ICR for workers of basic occupations of studied plants in dozens of times are higher than for the urban population. Priority carcinogens are: chromium VI, nickel, formaldehyde, silicon dioxide -for the aircraft plant employees; 1,2-dichloretan, vinyl chloride - for the workers of vinyl chloride production plant; benzopyrene - for the aluminum smelter workers.
[Mh] Termos MeSH primário: Poluentes Ocupacionais do Ar
Carcinogênese/induzido quimicamente
Cromo
Formaldeído
Indústria Manufatureira
Cloreto de Vinil
[Mh] Termos MeSH secundário: Poluentes Ocupacionais do Ar/análise
Poluentes Ocupacionais do Ar/toxicidade
Carcinógenos Ambientais/análise
Carcinógenos Ambientais/toxicidade
Cromo/análise
Cromo/toxicidade
Formaldeído/análise
Formaldeído/toxicidade
Seres Humanos
Indústria Manufatureira/métodos
Indústria Manufatureira/normas
Exposição Ocupacional/efeitos adversos
Exposição Ocupacional/análise
Exposição Ocupacional/prevenção & controle
Medição de Risco/métodos
Medição de Risco/estatística & dados numéricos
Fatores de Risco
Sibéria/epidemiologia
Tempo
Cloreto de Vinil/análise
Cloreto de Vinil/toxicidade
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Air Pollutants, Occupational); 0 (Carcinogens, Environmental); 0R0008Q3JB (Chromium); 18540-29-9 (chromium hexavalent ion); 1HG84L3525 (Formaldehyde); WD06X94M2D (Vinyl Chloride)
[Em] Mês de entrada:1803
[Cu] Atualização por classe:180309
[Lr] Data última revisão:
180309
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:180216
[St] Status:MEDLINE


  2 / 12045 MEDLINE  
              first record previous record next record last record
seleciona
para imprimir
Fotocópia
Texto completo
[PMID]:29381723
[Au] Autor:Long B; Ye B; Liu Q; Zhang S; Ye J; Zou L; Shi J
[Ad] Endereço:Department of Environmental Engineering, Zhejiang University, Hangzhou, Zhejiang Province, China.
[Ti] Título:Characterization of Penicillium oxalicum SL2 isolated from indoor air and its application to the removal of hexavalent chromium.
[So] Source:PLoS One;13(1):e0191484, 2018.
[Is] ISSN:1932-6203
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Removal of toxic Cr(VI) by microbial reduction is a promising approach to reducing its ecotoxicological impact. To develop bioremediation technologies, many studies have evaluated the application of microorganisms isolated from Cr(VI)-contaminated sites. Nonetheless, little attention has been given to microbes from the environments without a history of Cr(VI) contamination. In this study, we aimed to characterize the Cr(VI) tolerance and removal abilities of a filamentous fungus strain, SL2, isolated from indoor air. Based on phenotypic characterization and rDNA sequence analysis, SL2 was identified as Penicillium oxalicum, a species that has not been extensively studied regarding Cr(VI) tolerance and reduction abilities. SL2 showed high tolerance to Cr(VI) on solid and in liquid media, facilitating its application to Cr(VI)-contaminated environments. Growth curves of SL2 in the presence of 0, 100, 400, or 1000 mg/L Cr(VI) were well simulated by the modified Gompertz model. The relative maximal colony diameter and maximal growth rate decreased as Cr(VI) concentration increased, while the lag time increased. SL2 manifested remarkable efficacy of removing Cr(VI). Mass balance analysis indicated that SL2 removed Cr(VI) by reduction, and incorporated 0.79 mg of Cr per gram of dry biomass. In electroplating wastewater, the initial rate of Cr(VI) removal was affected by the initial contaminant concentration. In conclusion, P. oxalicum SL2 represents a promising new candidate for Cr(VI) removal. Our results significantly expand the knowledge on potential application of this microorganism.
[Mh] Termos MeSH primário: Microbiologia do Ar
Cromo/isolamento & purificação
Penicillium/isolamento & purificação
[Mh] Termos MeSH secundário: Microscopia Eletrônica de Varredura
RNA Ribossômico/metabolismo
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Nm] Nome de substância:
0 (RNA, Ribosomal); 0R0008Q3JB (Chromium); 18540-29-9 (chromium hexavalent ion)
[Em] Mês de entrada:1803
[Cu] Atualização por classe:180309
[Lr] Data última revisão:
180309
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:180131
[St] Status:MEDLINE
[do] DOI:10.1371/journal.pone.0191484


  3 / 12045 MEDLINE  
              first record previous record next record last record
seleciona
para imprimir
Fotocópia
Texto completo
[PMID]:29175407
[Au] Autor:Patra DK; Pradhan C; Patra HK
[Ad] Endereço:Post-Graduate Department of Botany, Utkal University, Bhubaneswar 751004, India.
[Ti] Título:An in situ study of growth of Lemongrass Cymbopogon flexuosus (Nees ex Steud.) W. Watson on varying concentration of Chromium (Cr ) on soil and its bioaccumulation: Perspectives on phytoremediation potential and phytostabilisation of chromium toxicity.
[So] Source:Chemosphere;193:793-799, 2018 Feb.
[Is] ISSN:1879-1298
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:Chromium (Cr) contamination in soil is a growing concern in sustainable agricultural production and food safety. Remediation of Cr from contaminated soils is a challenging task which may not only help in sustaining agriculture but also in minimizing adverse environmental impacts. Pot culture experiments were performed with the application of varied concentration of Cr to assess the Chromium accumulation potential of Lemongrass and to study the impact of toxic concentration of Cr on morphological, physiological and biochemical parameters of the plant. The results showed an increasing accumulation trend of Chromium with increasing Chromium concentrations in both root and shoot of 60 days old Lemongrass plants, while the protein and chlorophyll contents decreased. Similarly, accumulation of Cr increased the levels of proline and antioxidant enzymes indicating the enhanced damage control activity. The potentiality of the plant with the capacity to accumulate and stabilize Cr compound in Cr contaminated soil by phytoremediation process has been explored in the present investigation.
[Mh] Termos MeSH primário: Biodegradação Ambiental
Cromo/farmacocinética
Cromo/toxicidade
Cymbopogon/metabolismo
Solo/química
[Mh] Termos MeSH secundário: Antioxidantes/metabolismo
Clorofila/metabolismo
Cromo/análise
Cymbopogon/crescimento & desenvolvimento
Proteínas de Plantas/metabolismo
Raízes de Plantas/metabolismo
Poluentes do Solo/análise
Poluentes do Solo/farmacologia
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Antioxidants); 0 (Plant Proteins); 0 (Soil); 0 (Soil Pollutants); 0R0008Q3JB (Chromium); 1406-65-1 (Chlorophyll)
[Em] Mês de entrada:1803
[Cu] Atualização por classe:180309
[Lr] Data última revisão:
180309
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:171128
[St] Status:MEDLINE


  4 / 12045 MEDLINE  
              first record previous record next record last record
seleciona
para imprimir
Fotocópia
Texto completo
[PMID]:28841524
[Au] Autor:Bharagava RN; Mishra S
[Ad] Endereço:Laboratory for Bioremediation and Metagenomics Research (LBMR), Department of Environmental Microbiology, Babasaheb Bhimrao Ambedkar University (A Central University), Vidya Vihar, Raebareli Road, Lucknow 226025, U.P., India. Electronic address: bharagavarnbbau11@gmail.com.
[Ti] Título:Hexavalent chromium reduction potential of Cellulosimicrobium sp. isolated from common effluent treatment plant of tannery industries.
[So] Source:Ecotoxicol Environ Saf;147:102-109, 2018 Jan.
[Is] ISSN:1090-2414
[Cp] País de publicação:Netherlands
[La] Idioma:eng
[Ab] Resumo:Present study deals with the isolation and characterization of a bacterium capable for the effective reduction of Cr(VI) from tannery wastewater. Based on the 16S rRNA gene sequence analysis, this bacterium was identified as Cellulosimicrobium sp. (KX710177). During the Cr(VI) reduction experiment performed at 50, 100, 200,and 300mg/L of Cr(VI) concentrations, the bacterium showed 99.33% and 96.98% reduction at 50 and 100mg/L at 24 and 96h, respectively. However, at 200 and 300mg/L concentration of Cr(VI), only 84.62% and 62.28% reduction was achieved after 96h, respectively. The SEM analysis revealed that bacterial cells exposed to Cr(VI) showed increased cell size in comparison to unexposed cells, which might be due to either the precipitation or adsorption of reduced Cr(III) on bacterial cells. Further, the Energy Dispersive X-ray (EDX) analysis showed some chromium peaks for cells exposed to Cr(VI), which might be either due to the presence of precipitated reduced Cr(III) on cells or complexation of Cr(III) with cell surface molecules. The bacterium also showed resistance and sensitivity against the tested antibiotics with a wide range of MIC values ranging from 250 to 800mg/L for different heavy metals. Thus, this multi-drug and multi-metal resistant bacterium can be used as a potential agent for the effective bioremediation of metal contaminated sites.
[Mh] Termos MeSH primário: Cromo/análise
Micrococcaceae/isolamento & purificação
Curtume
Águas Residuais/microbiologia
Poluentes Químicos da Água/análise
Purificação da Água/métodos
[Mh] Termos MeSH secundário: Biodegradação Ambiental
Cromo/química
Cromo/toxicidade
Relação Dose-Resposta a Droga
Testes de Sensibilidade Microbiana
Micrococcaceae/efeitos dos fármacos
Micrococcaceae/genética
Oxirredução
RNA Ribossômico 16S/genética
Águas Residuais/análise
Poluentes Químicos da Água/química
Poluentes Químicos da Água/toxicidade
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (RNA, Ribosomal, 16S); 0 (Waste Water); 0 (Water Pollutants, Chemical); 0R0008Q3JB (Chromium); 18540-29-9 (chromium hexavalent ion)
[Em] Mês de entrada:1803
[Cu] Atualização por classe:180309
[Lr] Data última revisão:
180309
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170826
[St] Status:MEDLINE


  5 / 12045 MEDLINE  
              first record previous record next record last record
seleciona
para imprimir
Fotocópia
Texto completo
[PMID]:28985541
[Au] Autor:Wang W
[Ad] Endereço:College of Chemistry and Chemical Engineering, Dezhou University, Dezhou 253023, China. Electronic address: wwqzs@126.com.
[Ti] Título:Chromium (â…¥) removal from aqueous solutions through powdered activated carbon countercurrent two-stage adsorption.
[So] Source:Chemosphere;190:97-102, 2018 Jan.
[Is] ISSN:1879-1298
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:To exploit the adsorption capacity of commercial powdered activated carbon (PAC) and to improve the efficiency of Cr(VI) removal from aqueous solutions, the adsorption of Cr(VI) by commercial PAC and the countercurrent two-stage adsorption (CTA) process was investigated. Different adsorption kinetics models and isotherms were compared, and the pseudo-second-order model and the Langmuir and Freundlich models fit the experimental data well. The Cr(VI) removal efficiency was >80% and was improved by 37% through the CTA process compared with the conventional single-stage adsorption process when the initial Cr(VI) concentration was 50 mg/L with a PAC dose of 1.250 g/L and a pH of 3. A calculation method for calculating the effluent Cr(VI) concentration and the PAC dose was developed for the CTA process, and the validity of the method was confirmed by a deviation of <5%.
[Mh] Termos MeSH primário: Adsorção
Cromo/isolamento & purificação
Purificação da Água/métodos
[Mh] Termos MeSH secundário: Carcinógenos Ambientais
Carvão Vegetal/química
Cinética
Métodos
Poluentes Químicos da Água/isolamento & purificação
[Pt] Tipo de publicação:JOURNAL ARTICLE; VALIDATION STUDIES
[Nm] Nome de substância:
0 (Carcinogens, Environmental); 0 (Water Pollutants, Chemical); 0R0008Q3JB (Chromium); 16291-96-6 (Charcoal); 18540-29-9 (chromium hexavalent ion)
[Em] Mês de entrada:1803
[Cu] Atualização por classe:180308
[Lr] Data última revisão:
180308
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:171007
[St] Status:MEDLINE


  6 / 12045 MEDLINE  
              first record previous record next record last record
seleciona
para imprimir
Fotocópia
Texto completo
[PMID]:29181620
[Au] Autor:Real MIH; Azam HM; Majed N
[Ad] Endereço:Department of Civil Engineering, University of Asia Pacific, Dhaka, Bangladesh.
[Ti] Título:Consumption of heavy metal contaminated foods and associated risks in Bangladesh.
[So] Source:Environ Monit Assess;189(12):651, 2017 Nov 27.
[Is] ISSN:1573-2959
[Cp] País de publicação:Netherlands
[La] Idioma:eng
[Ab] Resumo:This study investigated the magnitude of heavy metal contamination and determined the carcinogenic as well as non-carcinogenic risks associated with selected food consumption in Bangladesh. Commonly consumed varieties of rice, vegetables, and fish samples were analyzed to measure the concentrations of heavy metals such as cadmium, chromium, lead, arsenic, manganese, nickel, and zinc. These staple food items showed the greatest probabilities of heavy metal contamination in different phases of their production and marketing. Wide variations of metal concentrations were observed. Specifically, estimated daily intakes of arsenic and cadmium exceeded allowable daily intakes in all three food items. Toxicity scores of the metals were evaluated, and a comprehensive risk assessment was conducted to quantify the risks associated with the daily food consumption. Except for cadmium and lead in vegetables, all the contaminants present in each food item posed significant levels of carcinogenic risks up to 2.99 × 10 compared to the EPA recommended carcinogenic risk level of 1.0 × 10 . Cadmium and arsenic intake due to rice consumption also posed unsafe levels of non-carcinogenic risks of 4.587 and 6.648, respectively, compared to the EPA recommended non-carcinogenic risk level of 1.0. Finally, a revised set of permissible limits was proposed for the heavy metals detected in the food items. Those permissible limits would ensure the risks associated with food consumption below the allowable carcinogenic and non-carcinogenic risk levels. Thus, this comprehensive approach would provide guidelines to formulate adequate control measures and regulatory limits of toxic metals in foods produced and marketed in Bangladesh.
[Mh] Termos MeSH primário: Exposição Dietética/estatística & dados numéricos
Poluentes Ambientais/análise
Contaminação de Alimentos/análise
Metais Pesados/análise
[Mh] Termos MeSH secundário: Animais
Arsênico/análise
Bangladesh
Cádmio/análise
Cromo
Monitoramento Ambiental
Peixes
Contaminação de Alimentos/estatística & dados numéricos
Seres Humanos
Níquel
Medição de Risco
Verduras/química
Zinco
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Environmental Pollutants); 0 (Metals, Heavy); 00BH33GNGH (Cadmium); 0R0008Q3JB (Chromium); 7OV03QG267 (Nickel); J41CSQ7QDS (Zinc); N712M78A8G (Arsenic)
[Em] Mês de entrada:1803
[Cu] Atualização por classe:180307
[Lr] Data última revisão:
180307
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:171129
[St] Status:MEDLINE
[do] DOI:10.1007/s10661-017-6362-z


  7 / 12045 MEDLINE  
              first record previous record next record last record
seleciona
para imprimir
Fotocópia
Texto completo
[PMID]:29216955
[Au] Autor:Li Z; Liu M; Chen LK; Li GZ
[Ad] Endereço:College of Environment and Resource, Jilin University, Changchun 130012, Jilin, China; Environmental Monitoring Center of Jilin Province, Changchun 130011, Jilin, China.
[Ti] Título:Combined Toxicity of an Environmental Remediation Residue, Magnetite Fe3O4 Nanoparticles/Cr(VI) Adduct.
[So] Source:Biomed Environ Sci;30(11):783-791, 2017 Nov.
[Is] ISSN:0895-3988
[Cp] País de publicação:Netherlands
[La] Idioma:eng
[Ab] Resumo:OBJECTIVE: This paper aims to elucidate the combined toxicity of magnetite nanoparticles/Chromium [MNPs/Cr(VI)] adducts. METHODS: The HEK293 cell was exposed to either Cr(VI) or MNPs, or their adducts MNPs/Cr(VI). The cytotoxicity was evaluated by assessing the cell viability, apoptosis, oxidative stress induction, and cellular uptake. RESULTS: The toxicity of formed adducts is significantly reduced when compared to Cr(VI) anions. We found that the cellular uptake of MNPs/Cr(VI) adduct was rare, only few particles were endocytosed from the extracellular fluid and not accumulated in the cell nucleus. On the other hand, the Cr(VI) anions entered cells, generated oxidative stress, induced cell apoptosis, and caused cytotoxicity. CONCLUSION: The results showed minor effects of the nanoadducts on the tested cells and supported that magnetite nanoparticles could be implemented in the wastewater treatment process in which advantageous properties outweigh the risks.
[Mh] Termos MeSH primário: Cromo/química
Recuperação e Remediação Ambiental/métodos
Óxido Ferroso-Férrico/química
Nanopartículas Metálicas/química
[Mh] Termos MeSH secundário: Cromo/toxicidade
Óxido Ferroso-Férrico/toxicidade
Células HEK293
Seres Humanos
Nanopartículas Metálicas/toxicidade
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0R0008Q3JB (Chromium); 18540-29-9 (chromium hexavalent ion); XM0M87F357 (Ferrosoferric Oxide)
[Em] Mês de entrada:1803
[Cu] Atualização por classe:180305
[Lr] Data última revisão:
180305
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:171209
[St] Status:MEDLINE
[do] DOI:10.3967/bes2017.106


  8 / 12045 MEDLINE  
              first record previous record next record last record
seleciona
para imprimir
Fotocópia
[PMID]:29425010
[Au] Autor:Mamina VP; Zhigalsky OA
[Ti] Título:[Influence of ß - carotene on the spermatogenic epithelium and output dominant lethal muthations in rats under the exposure to hexavalent chromium].
[So] Source:Gig Sanit;95(7):682-5, 2016.
[Is] ISSN:0016-9900
[Cp] País de publicação:Russia (Federation)
[La] Idioma:rus
[Ab] Resumo:In adult rats exposed to hexavalent chromium (intraperitoneal injection of 0.028; 0.28 and 2.8 mg KCrO(kg bw/ day) during 48 days there is observed the decrease in the intensity of index of spermatogenesis, increase ofspermatids with micronuclei, intensifying of processes peroxidation of lipids in testis, resulted in the increase in the number of the abnormal spermatozoa and of percent of a fetal death. Simultaneous supplementation of ß-carotene in Cr (VI) exposed rats showed the increase of intensity index of spermatogenesis. Morphology of a sperm, intensity of processes peroxidation of lipids in testis and of number of viable embryos was restored.
[Mh] Termos MeSH primário: Cromo/efeitos adversos
Espermatogênese
beta Caroteno/farmacologia
[Mh] Termos MeSH secundário: Animais
Antimutagênicos/farmacologia
Antioxidantes/farmacologia
Modelos Animais de Doenças
Peroxidação de Lipídeos/efeitos dos fármacos
Provitaminas/farmacologia
Ratos
Espermatogênese/efeitos dos fármacos
Espermatogênese/fisiologia
Oligoelementos/efeitos adversos
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Antimutagenic Agents); 0 (Antioxidants); 0 (Provitamins); 0 (Trace Elements); 01YAE03M7J (beta Carotene); 0R0008Q3JB (Chromium)
[Em] Mês de entrada:1803
[Cu] Atualização por classe:180301
[Lr] Data última revisão:
180301
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:180210
[St] Status:MEDLINE


  9 / 12045 MEDLINE  
              first record previous record next record last record
seleciona
para imprimir
Fotocópia
[PMID]:29424999
[Au] Autor:Tusupkaliev BT; Bermagambetova SK; Tusupkaliev AB
[Ti] Título:[Morbidity and content of microelements in the blood of school children residing near chromium enterprises].
[So] Source:Gig Sanit;95(7):655-8, 2016.
[Is] ISSN:0016-9900
[Cp] País de publicação:Russia (Federation)
[La] Idioma:rus
[Ab] Resumo:For the first time there was investigated the content of certain microelements in the blood of children of school age residing in the city of Aktobe (Kazakhstan), where the global giants, mining andprocessing chrome ore productions are located. There were determined blood levels of chromium, nickel, lead in children. There was shown the difference in the blood content of microelements in children, depending on region of residence and their correlation with the core indices of health and disease.
[Mh] Termos MeSH primário: Indústria Química
Cromo/sangue
Exposição Ambiental
Doença Ambiental
Chumbo/sangue
Mineração
Níquel/sangue
[Mh] Termos MeSH secundário: Criança
Exposição Ambiental/efeitos adversos
Exposição Ambiental/análise
Exposição Ambiental/estatística & dados numéricos
Doença Ambiental/sangue
Doença Ambiental/classificação
Doença Ambiental/epidemiologia
Feminino
Disparidades nos Níveis de Saúde
Seres Humanos
Cazaquistão/epidemiologia
Masculino
Medição de Risco
Estatística como Assunto
Oligoelementos/sangue
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Trace Elements); 0R0008Q3JB (Chromium); 2P299V784P (Lead); 7OV03QG267 (Nickel)
[Em] Mês de entrada:1803
[Cu] Atualização por classe:180301
[Lr] Data última revisão:
180301
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:180210
[St] Status:MEDLINE


  10 / 12045 MEDLINE  
              first record previous record
seleciona
para imprimir
Fotocópia
Texto completo
[PMID]:29117590
[Au] Autor:Gupta P; Kumar V; Usmani Z; Rani R; Chandra A
[Ad] Endereço:Laboratory of Applied Microbiology, Department of Environmental Science & Engineering, Indian Institute of Technology (ISM), Dhanbad 826 004, Jharkhand, India.
[Ti] Título:Phosphate solubilization and chromium (VI) remediation potential of Klebsiella sp. strain CPSB4 isolated from the chromium contaminated agricultural soil.
[So] Source:Chemosphere;192:318-327, 2018 Feb.
[Is] ISSN:1879-1298
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:In this study, an effort was made to identify an efficient phosphate solubilizing bacterial strain from chromium contaminated agricultural soils. Based on the formation of a solubilized halo around the colonies on Pikovskaya's agar amended with chromium (VI), 10 strains were initially screened out. Out of 10, strain CPSB4, which showed significantly high solubilization zone at different chromium concentrations, was selected for further study. The strain CPSB4 showed significant plant growth promotion traits with chromium (VI) stress under in-vitro conditions in broth. The plant growth promotion activities of the strain decreased regularly, but were not completely lost with the increase in concentration of chromium up to 200 mg L . On subjected to FT-IR analysis, the presence of the functional group, indicating the organic acid aiding in phosphate solubilization was identified. At an optimal temperature of 30  C and pH 7.0, the strain showed around 93% chromium (VI) reduction under in-vitro conditions in broth study. In soil condition, the maximum chromium (VI) reduction obtained was 95% under in-vitro conditions. The strain CPSB4 was identified as Klebsiella sp. on the basis of morphological, biochemical and 16S rRNA gene sequencing. This study shows that the diverse role of the bacterial strain CPSB4 would be useful in the chromium contaminated soil as a good bioremediation and plant growth promoting agent as well.
[Mh] Termos MeSH primário: Biodegradação Ambiental
Cromo/farmacologia
Klebsiella/metabolismo
Fosfatos/metabolismo
Poluentes do Solo/metabolismo
[Mh] Termos MeSH secundário: Klebsiella/química
Klebsiella/genética
Klebsiella/isolamento & purificação
Fosfatos/química
Desenvolvimento Vegetal/efeitos dos fármacos
Solo/química
Microbiologia do Solo
Poluentes do Solo/farmacologia
Solubilidade
Espectroscopia de Infravermelho com Transformada de Fourier
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Phosphates); 0 (Soil); 0 (Soil Pollutants); 0R0008Q3JB (Chromium)
[Em] Mês de entrada:1802
[Cu] Atualização por classe:180212
[Lr] Data última revisão:
180212
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:171109
[St] Status:MEDLINE



página 1 de 1205 ir para página                         
   


Refinar a pesquisa
  Base de dados : MEDLINE Formulário avançado   

    Pesquisar no campo  
1  
2
3
 
           



Search engine: iAH v2.6 powered by WWWISIS

BIREME/OPAS/OMS - Centro Latino-Americano e do Caribe de Informação em Ciências da Saúde