Abstract:
:A locally isolated gram negative strain of Brucella sp., identified by biochemical methods and 16SrRNA analysis, reduced chromate to 100%, 94.1%, 93.2%, 66.9% and 41.6% at concentrations of 50, 100, 150, 200 and 300mgl(-1), respectively at pH 7 and temperature 37 degrees C. Increasing concentrations of Cr(VI) in the medium lowered the growth rate but could not be directly correlated with the amount of Cr(VI) reduced. The strain also exhibited multiple heavy metal (Ni,Zn,Hg,Pb,Co) tolerance and resistance to various antibiotics. Assay with crude cell-free extracts demonstrated that the hexavalent chromium reduction was mainly associated with the soluble fraction of the cell. High Cr(VI) concentration resistance and high Cr(VI) reducing ability of the strain make it a suitable candidate for bioremediation.
journal_name
Bioresour Technoljournal_title
Bioresource technologyauthors
Thacker U,Parikh R,Shouche Y,Madamwar Ddoi
10.1016/j.biortech.2006.06.011subject
Has Abstractpub_date
2007-05-01 00:00:00pages
1541-7issue
8eissn
0960-8524issn
1873-2976pii
S0960-8524(06)00332-4journal_volume
98pub_type
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