Bioaccumulation of silver and the isolation of metal-binding protein from P.diminuta

Abstract

ABSTRACT

Bacterial pretreatment enhances removal of heavy metals during treatment of post-methanated distillery effluent by Typha angustata L.

“…Several authors have also reported bacterial removal of metals from industrial effluents (Chitra et al, 1995;Weon et al, 2001). A strain of Bacillus (Bacillus H-9) has been also reported to reduce Cd toxicity (both extracellular and intracellular) by binding of Cd to lipopolysaccharides in an extracellular membrane and by intracellular accumulation of the metal from aqueous solution by a polysaccharideproducing strain of Bacillus firmus (Ibrahim et al, 2001;Kazy et al, 2002;Salehizadeh and Shojaosadati, 2003).…”

Biosynthesis, optimization, purification and characterization of gold nanoparticles

“…On the other hand, a wide variety of geometric, metal nanoparticles were produced by both prokaryotic and eukaryotic organisms including bacteria, fungi and yeasts Mukherjee, 2001). This bioreduction of metal particles is regarded as an organism's survival mechanism against toxic metal ions and occurs via an active or passive process or a combination of the two Ibrahim et al, 2001). Such a biological route involving micro-organisms provides great advantages over traditional methods, as it has the potential to be cost-effective, simple and environmentally friendly.…”

Determination of the effective origin source for nanosilver particles produced by Escherichia coli strain S78 and its application as antimicrobial agent

“…4, the highest AgNPs amount was recorded in the washed cells' surfaces followed by cell-free supernatant, while the lowest amount was observed with digested cell pellet. On the contrary, Ibrahim et al [32] showed that the amount of silver accumulated inside the cells was much greater than that at the cell surfaces resulted from growing of P. diminuta in presence of 50 M Ag + . However, it was previously recommended that extracellular synthesis of nanoparticles could be highly advantageous for synthesis in large quantities and easy downstream processing [33].…”