Rod-shaped bacteria capable of oxidizing ferrous iron at 55 degrees C were cultured from samples of a copper mine leach dump. Yeast extract or cysteine was required by these Thiobacillus-like bacteria for growth, using ferrous iron as an energy source.

Natural aquatic and soil samples were screened for the presence of thiocyanate-degrading bacteria. Using thiocyanate supplementation, we established an enrichment culture containing such bacteria from lake water. The dominant bacteria had the scnC-LS5 gene encoding thiocyanate hydrolase, which was closely related to the enzyme found previously in Thiobacillus thioparus THI115 isolated from acti...

Pengohsidan sulfan unSor olelt Thiobacillus denitrificans adalalt dimangl?inlwn o/elt enzim yang didapati df dalam pecahan S 144; GSH dan satu faMor yang stahil terhadap haba adalall diperlulwn untul? tindal?balas. Di dalam peealian 3 144 pengohsidan suifan boleh dilwitl?an hepada pengambilan ohsigen dan di dalam peeahan S 10 pengohsidan dilwithan Iwpada penurwum nitrat. Hasil permulaan pengohs...

in order to evaluate of biological fertilizers and micronutrient elements effects on yield and some agronomic traits in rapeseed (brassica napus l.), an experimental was performed as factorial arrengement based on randomized complete blocks design with three replications in 2012-13 in research station of shahid chamran university of ahvaz, iran. in this experiment, micronutrient elements were i...

In a study of chemosynthesis (the fixation of CO(2) by autotrophic bacteria in the dark) in Thiobacillus thiooxidans, the data obtained support the following conclusions: 1. CO(2) can be fixed by "resting cells" of Thiobacillus thiooxidans; the fixation is not "growth bound." 2. The physiological condition of the cell is of considerable importance in determining CO(2) fixation. 3. CO(2) fixatio...

Here we describe artificial help for the respiratory electron flow supporting anaerobic growth of Thiobacillus ferrooxidans through exogenous electrolysis. Flux between H(2) and a anode through cells was accomplished with electrochemical regeneration of iron. The electrochemical help resulted in a 12-fold increase in yield compared with the yield observed in its absence.

sulfur emission from coal combustion presents many environmental problems. the techniques used to reduce the amount of sulfur in coal before combustion, include physical, chemical and biological processes.biological processes based on degradation of sulfur compounds by microorganisms offer many advantages over the conventional physical and chemical processes. the processes are performed under m...