Desulfurization of Alkyl and Aromatic Sulfides and Sulfonates by Dibenzothiophene-desulfurizing Rhodococcus sp. Strain SY1
Desulfurization of Alkyl and Aromatic Sulfides and Sulfonates by Dibenzothiophene-desulfurizing Rhodococcus sp. Strain SY1
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二苯并噻吩脱硫红球菌对烷基和芳香族硫化物和磺酸盐的脱硫。
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发表时间：
1995
期刊：
影响因子：
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通讯作者：
T. Kodama
中科院分区：
文献类型：
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作者：
T. Omori;Yuko Saiki;K. Kasuga;T. Kodama
一种二苯并噻吩（DBT）-硫细菌，红球菌属菌株SY 1也可以使用二甲基硫醚（DMS）、二甲基亚砜（DMSO）和几种烷基磺酸盐作为硫的唯一来源。菌株SY 1在DMSO培养基上生长，在培养基中积累DMS、二甲基砜（DMSO 2）和甲醇，在气相中积累甲烷，甲烷是甲烷磺酸盐磺化的产物。这些结果表明，菌株SY 1最终可以通过DMSO、DMSO 2和甲磺酸盐将DMS氧化降解为甲烷和硫酸盐，并将一部分DMSO还原为DMS。根据烷基磺酸盐和芳香族磺酸盐的磺化模式，提出了不同的磺化类型。硫酸盐被认为是抑制参与DBT脱硫的酶的表达。去除BaCl 2产生的硫酸盐使DBT的降解率提高约14%。
A dibenzothiophene (DBT)-desulfurizing bacterium, Rhodococcus sp. strain SY1 could also use dimethyl sulfide (DMS), dimethyl sulfoxide (DMSO), and several alkylsulfonates as sole sources of sulfur. Strain SY1 grown on DMSO accumulated DMS, dimethyl sulfone (DMSO2), and methanol in the culture medium and methane in the gas phase, and methane was the product of methanesulfonate desulfonation. These results indicated that strain SY1 could finally degrade DMS in the oxidative pathway via DMSO, DMSO2, and methanesulfonate to methane and sulfate, reducing a part of DMSO back to DMS. From desulfonation patterns of alkyl and aromatic sulfonates, different types of desulfonation are proposed. Sulfate was suggested to repress the expression of the enzymes involved in DBT desulfurization. Removal of the sulfate produced by the addition of BaCl2 enhanced the degradation rate of DBT about 14%.