Hexavalent Chromate Reductase Activity in Cell Free Extracts ofPenicilliumsp. | Zendy

Damaris L. Arévalo-Rangel | Zendy; Juan Fernando Cárdenas González | Zendy; Víctor Manuel Martínez Juárez | Zendy; Ismael Acosta Rodríguez | Zendy

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Hexavalent Chromate Reductase Activity in Cell Free Extracts ofPenicilliumsp.

Author(s) -

Damaris L. Arévalo-Rangel,

Juan Fernando Cárdenas González,

Víctor Manuel Martínez Juárez,

Ismael Acosta Rodríguez

Publication year - 2013

Publication title -

bioinorganic chemistry and applications

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.865

H-Index - 35

eISSN - 1565-3633

pISSN - 1687-479X

DOI - 10.1155/2013/909412

Subject(s) - hexavalent chromium , chemistry , chromate conversion coating , chromium , reductase , nuclear chemistry , penicillium , metal , azide , fungus , enzyme , inorganic chemistry , biochemistry , food science , botany , organic chemistry , biology

A chromium-resistant fungus isolated from contaminated air with industrial vapors can be used for reducing toxic Cr(VI) to Cr(III). This study analyzes in vitro reduction of hexavalent chromium using cell free extract(s) of the fungus that was characterized based on optimal temperature, pH, use of electron donors, metal ions and initial Cr(VI) concentration in the reaction mixture. This showed the highest activity at 37°C and pH 7.0; there is an increase in Cr(VI) reductase activity with addition of NADH as an electron donor, and it was highly inhibited by Hg 2+ , Ca 2+ and Mg 2+ , and azide, EDTA, and KCN.

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