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Microbial Degradation of Disodium Terephthalate by Rhodococcus sp. 9-003

机译：红球菌对微生物对苯二甲酸二钠的降解9-003

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摘要

Strain 9-003 was isolated from soil in the textile dying factory for its ability to assimilate disodium terephthalate (DT) as a carbon and energy source. Analysis of the base sequence of 16S ribosomal DNA allowed us to assign the bacterium to Rhodococcus sp., the strain reduced a total concentration of DT from 95.2 to 40.8 mM for 7 d, and showed highest degradation rate (1.0 mM/h) in pH 7.0 culture broth at 25℃, 180 rpm. Oxygen uptake experiments with the resting cells showed the biodegradation process was aerobic. HPLC analysis of the culture broth revealed there was at least one intermediate-protocatechuic acid (PC) involved the microbial degradation process. Substrate spectrum indicated strain 9-003 assimilated DT, PC and p-hydroxybenzoic acid efficiently. The degradation path way of DT was discussed and we propose that DT was metabolized aerobically by Rhodococcus sp. 9-003 via PC.
机译：9-003号菌株是从纺织染整厂的土壤中分离出来的，因为它具有吸收对苯二甲酸二钠（DT）作为碳和能源的能力。对16S核糖体DNA碱基序列的分析使我们能够将细菌分配给Rhodococcus sp。，该菌株在7 d内将DT的总浓度从95.2降至40.8 mM，并且在pH值下显示出最高的降解率（1.0 mM / h） 7.0培养液在25℃，180 rpm下进行。静息细胞的吸氧实验表明其生物降解过程是有氧的。肉汤的HPLC分析表明，至少有一种中间原儿茶酸（PC）参与了微生物降解过程。底物光谱表明菌株9-003有效地同化了DT，PC和对羟基苯甲酸。探讨了DT的降解途径，并提出了红球菌对DT的需氧代谢。通过PC 9-003。

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  • 来源
    《繊維学会誌》 |2012年第7期|p.205-209|共5页
  • 作者

    Shichao Xu; Masaya Yamashita; Junlin Yu; Shin-ichiro Suye;

  • 作者单位

    School of Environmental and Chemical Engineering, Tianjin Polytechnic University, Tianjin 300160, China;

    School of Environmental and Chemical Engineering, Tianjin Polytechnic University, Tianjin 300160, China;

    Department of Applied Chemistry and Biotechnology, Graduate School of Engineering, University of Fukui, 3-9-1 Bunkyo, Fukui 910-8507, Japan;

    Department of Applied Chemistry and Biotechnology, Graduate School of Engineering, University of Fukui, 3-9-1 Bunkyo, Fukui 910-8507, Japan;

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