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研究论文

何健,崔中利,刘智,李顺鹏.耐盐降解苯乙酸类菌株A1(Arthrobacter sp.A1)的分离和特性研究[J].环境科学学报,2002,22(3):374-378

Isolation and characterization of a salt-tolerant strain A1(Arthrobacter sp.A1) for the degradation of phenyl acetic acid

摘要：从处理含盐(NaCl浓度为0.77mol/L)苯乙酸生产污水的耐盐活性污泥中分离到一株节杆菌(ArthrobacterspA1).该菌株能在NaCl浓度为0.1molL—20mol/L, 以苯乙酸为唯一碳源的基础培养基中生长, 或在NaCl浓度为0mol/L—24mol/L的完全培养基中生长, 并能适应急剧的盐浓度变化.对其它常见的低价态无机盐份如KCl、MgCl₂、(NH₄)SO₄、Na₂SO₄

Abstract：A strain of bacterium identified as %Arthrobacter% sp. A1 was isolated from activated sludge produced in the treatment of hapersaline waste water. This strain was able to grow in NaCl concentration of 0 1mol/L-2 0mol/L and phenyl acetic acid as the sole source of carbon and energy. The characteristics of this strain were studied, it survived the sudden salt concentration change and othes low valunce salts as KCl, MgCl₂, (NH₄) ₂SO₄, Na₂SO₄ and CaCl₂, but no resistance to heavy metal salt. it was found that the intracellular accumulation of K⁺, free amino acid and QAC increased with the increasing of salinity.