Abstract：
:Heavy-metal chromium [Cr(VI)] is a ubiquitous environmental pollutant. Comparing with chemical reduction, microbiological reduction is considered to be a friendly and cheaper way to decrease the damage caused by chromate. A bacterial strain, CR-07, which is resistant to and capable of reducing chromate was isolated from a mud sample of iron ore and identified as a Microbacterium sp. The bacterium had a high degree of tolerance to chromate, and could grow in LB medium containing 4.08 mM of K(2)Cr(2)O(7). It also had a degree of resistance to other heavy metals, e.g. Cd(2+), Pb(2+), Zn(2+), Cu(2+), Co(2+), Hg(2+) and Ag(+). The bacterium could remove 1.02 mM of Cr(VI) from LB medium within 36 h of incubation. Chromate removal was achieved in the supernatant from the bacterial cultures, and corresponded to chromate reduction. The activity of chromate reduction by the bacterium was not related to enzymes or reducing sugars, while fluorometric assay suggested that glutathione, a chromate-reducing substance which was produced by the bacterium, was one of the factors that contributed to the reduction of Cr(VI).
journal_name
World J Microbiol Biotechnoljournal_title
World journal of microbiology & biotechnologyauthors
Liu Z,Wu Y,Lei C,Liu P,Gao Mdoi
10.1007/s11274-011-0962-5subject
Has Abstractpub_date
2012-04-01 00:00:00pages
1585-92issue
4eissn
0959-3993issn
1573-0972journal_volume
28pub_type
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journal_title：World journal of microbiology & biotechnology
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journal_title：World journal of microbiology & biotechnology
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journal_title：World journal of microbiology & biotechnology
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journal_title：World journal of microbiology & biotechnology
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journal_title：World journal of microbiology & biotechnology
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journal_title：World journal of microbiology & biotechnology
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journal_title：World journal of microbiology & biotechnology
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journal_title：World journal of microbiology & biotechnology
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journal_title：World journal of microbiology & biotechnology
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pub_type： 杂志文章
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journal_title：World journal of microbiology & biotechnology
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