Data/hora: 13/06/2024 16:04:12

Provedor de dados: | 52
País: | Brazil
Título: | Characterization and Metal Detoxification Potential of Moderately Thermophilic Bacillus cereus from Geothermal Springs of Himalaya
Autores: | Ghalib,Aslam Khan; Yasin,Muhammad; Faisal,Muhammad.
Data: | 2014-08-01
Ano: | 2014
Palavras-chave: | Chromium; Bioremediation; Selenium; Heavy metals.
Resumo: | Two thermophilic Bacillus cereus strains (B. cereus-TA2 and B. cereus-TA4) used in the present study were isolated from the geothermal spring of Hunza valley, Gilgit, Pakistan. They showed the ability to withstand and grow at high temperature (85°C). Both these strains could resist multiple metals (copper, cadmium, mercury, manganese, zinc, arsenic, chromium and selenium). Strain B. cereus-TA4 reduced Cr (VI) at pH 5.0 to 9.0 but maximum reduction (83%) was observed at pH 7.0 after 48 h when initially supplied with 200 µg mL-1of K2CrO4. Lower initial concentrations such as 100 µg mL-1 supported higher reduction (90 to 95%) than that of high concentration such as 500 µg mL-1 (20 to 30%). Both the strains reduced nearly 70% of Se (IV) after 48 h of growth at pH 7.0 when initially supplied with 200 µg mL-1 of Na2SeO3. The optimum temperature for maximum Se (IV) reduction was 45°C for both the strains.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132014000400554
Editor: | Instituto de Tecnologia do Paraná - Tecpar
Relação: | 10.1590/S1516-8913201402001
Formato: | text/html
Fonte: | Brazilian Archives of Biology and Technology  v.57 n.4 2014
Fonte: | info:eu-repo/semantics/openAccess