Reduction of inorganic compounds with molecular hydrogen by Micrococcus lactilyticus. II. Stoichiometry with inorganic sulfur compounds.
C A WOOLFOLK · Journal of bacteriology · 1962
Research-use notice
Independent study record
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H2HUBB TAKEAWAY
Although tetrathionate is reduced to thiosulfate with an uptake of hydrogen, polythionates probably are not formed as intermediates in the reduction of metabisulfite to thiosulfate. This source-grounded publication contributes evidence relevant to molecular hydrogen and is retained in a transparent general research category when a more specific study design is not supported by the indexed record.
How Molecular Hydrogen Was Addressed
1962.-Extracts of Micrococcus lactilyticus (Veillonella alcalescens) are capable of utilizing molecular hydrogen for the reduction of metabisulfite (pyrosulfite) to thiosulfate via dithionite as an intermediate. The first step of metabisulfite reduction (i.e., to dithionite) is reversible, and, when dithionite is added as a substrate, there is an evolution of molecular hydrogen accompanied by the formation of equilibrium concentrations of metabisulfite.
What the Publication Reported
Although tetrathionate is reduced to thiosulfate with an uptake of hydrogen, polythionates probably are not formed as intermediates in the reduction of metabisulfite to thiosulfate.
Authors’ Conclusion
The authors concluded that kinetic studies indicate that dithionite may be directly reduced to thiosulfate without the formation of sulfoxylate as an intermediate.