Hexavalent chromium reduction by an actinobacterium ST13 in the family

Sugiyama, Tomoyasu*; Sugito, Hironori*; Mamiya, Ko*; Suzuki, Yoshinori*; Ando, Katsuhiko*; Onuki, Toshihiko

Journal of Bioscience and Bioengineering, 113(3), p.367 - 371, 2012/03

https://doi.org/10.1016/j.jbiosc.2011.11.009

An isolated strain ST13 was examined for the reducing activity of hexavalent chromium (Cr(VI)). XANES analysis of the precipitate shows the presence of Cr(OH), indicating the bacterial reduction of Cr(VI) to trivalent chromium (Cr(III)). The bacterial Cr(VI) reduction was more efficient in minimal medium supplemented with molasses than with glucose. These results strongly suggest that the isolate ST13 is a novel actinobacterium with Cr(VI) reducing activity that is stimulated by molasses.