Results 131 to 140 of about 3,026 (171)

Inorganic pyrophosphatase from Ferrobacillus ferrooxidans (Thiobacillus ferrooxidans)

Canadian Journal of Biochemistry, 1970
An inorganic pyrophosphatase was isolated from Ferrobacillus ferrooxidans and purified 21-fold. The cation Mg2+ was required for maximum activity; Mn2+, Zn2+, and Co2+ supported less than 10% of the activity with Mg2+. The pH optimum of the enzyme was between 7.5 and 8.5, using a magnesium to pyrophosphate ratio of one.
A, Howard, D G, Lundgren
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The thiosulfate-oxidizing enzyme of Ferrobacillus ferrooxidans (Thiobacillus ferrooxidans)

Canadian Journal of Biochemistry, 1968
The thiosulfate-oxidizing enzyme tetrathionase was purified about 250-fold from sulfur-grown Ferrobacillus ferrooxidans. It reduced 1 mole of ferricyanide per mole of thiosulfate oxidized, with the production of 0.5 mole of tetrathionate. The pH optimum was 5.0 with acetate buffer, and the Km for thiosulfate was determined to be 9 × 10−4 M. Inhibition
M, Silver, D G, Lundgren
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Magnetic properties of Acidithiobacillus ferrooxidans

Materials Science and Engineering: C, 2013
Understanding the magnetic properties of magnetotactic bacteria (MTBs) is of great interest in fields of life sciences, geosciences, biomineralization, biomagnetism, and planetary sciences. Acidithiobacillus ferrooxidans (At. ferrooxidans), obtaining energy through the oxidation of ferrous iron and various reduced inorganic sulfur compounds, can ...
Lei, Yan, Shuang, Zhang, Peng, Chen, Weidong, Wang, Yanjie, Wang, Hongyu, Li   +5 more
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Rapid and specific detection of Acidithiobacillus ferrooxidans and Leptospirillum ferrooxidans by PCR

Hydrometallurgy, 2008
Abstract Acidithiobacillus ferrooxidans and Leptospirillum ferrooxidans are two of the most important bacteria in heap bioleaching processes of copper sulphide at common operating temperatures (18–24 °C). In this paper, both microorganisms were detected in solutions and ores coming from processes in 2 days, using specific amplification of 16S ...
Escobar Miguel, Blanca, Bustos, Karina, Salazar, Oriana, Morales, Gabriela   +3 more
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Oxidation of stibnite byThiobacillus ferrooxidans

Antonie van Leeuwenhoek, 1977
Optimum pH, temperature and pulp density for microbiological leaching of museum-grade stibnite mineral has been investigated using a stibnite-adapted strain of Thiobacillus ferrooxidans. Optimum conditions were found to be pH 1.75, 35 C and 12g solid substrate per 100 ml of basal salts medium as the initial dose.
A E, Torma, G G, Gabra
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Ferrooxidans’s Isolation and Purification

Advanced Materials Research, 2011
we take mining water from Liang Zou group undergroud 200 m. and cltured in 9K medium, sodium thiosulfate medium, sulfur (S0) medium. According to its conformation on the different mediums, we get ferrooxidans(T.f), and studying its ecological nature shows that the ferrooxidanis is acidophilic autotrophic bacteria and has ferrous iron and sulfur ...
Li Hua Lv, Jing Cheng Ren, Tian Hu Sun, Jian Qing Dai   +3 more
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Adhesion forces between cells of Acidithiobacillus ferrooxidans, Acidithiobacillus thiooxidans or Leptospirillum ferrooxidans and chalcopyrite

Colloids and Surfaces B: Biointerfaces, 2012
The efficiency of copper leaching is improved by bacteria attached to chalcopyrite. Therefore, the study of the attachment mechanism to control leaching is important. The adhesion of three species of leaching microorganisms including Acidithiobacillus ferrooxidans, Acidithiobacillus thiooxidans and Leptospirillum ferrooxidans to chalcopyrite was ...
Zhu, Jianyu, Li, Qian, Jiao, Weifeng, Jiang, Hao, Sand, Wolfgang, Xia, Jinlan, Liu, Xueduan, Qin, Wenqing, Qiu, Guanzhou, Hu, Yuehua, Chai, Liyuan   +10 more
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Organoarsenic resistance and bioremoval of Acidithiobacillus ferrooxidans

Bioresource Technology, 2010
The tolerance and bioremoval of dimethylarsinic acid (DMA(V)) by Acidithiobacillus ferrooxidans (A. ferrooxidans) were investigated here. The inhibitory concentration (IC) of DMA(V) was determined for A. ferrooxidans. The effects of various parameters such as pH, contact time, initial DMA(V) concentration, biosorbent dose and temperature were ...
Lei, Yan, Huanhuan, Yin, Shuang, Zhang, Jiangong, Duan, Yongquan, Li, Peng, Chen, Hongyu, Li   +6 more
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Leptospirillum ferrooxidans based Fe2+ sensor

Biosensors and Bioelectronics, 2009
A novel electrochemical biosensor integrating the strictly autotrophic bacterial strain Leptospirillum ferrooxidans as a recognition element and a Clark type oxygen probe as a transducer was designed, metrologically and analytically characterized and applied for the specific Fe(2+) determination. The bacterial Fe(2+) oxidation involves O(2) consumption,
Margarita, Stoytcheva, Roumen, Zlatev, Jean-Pierre, Magnin, Marcela, Ovalle, Benjamin, Valdez   +4 more
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The uptake and assimilation of sulphate by Thiobacillus ferrooxidans

Archives of Microbiology, 1975
Sulphate was rapidly bound by cell suspensions of Thiobacillus ferrooxidans. The binding was depressed by tetrathionate but was unaffected by Group VI anions, cysteine or methionine. Increasing uptake of sulphate was observed in cell suspensions incubated in the presence of ferrous iron.
O H, Tuovinen, B C, Kelley, D J, Nicholas   +2 more
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