Wong P K, So C M
Department of Biology, Chinese University of Hong Kong, Shatin, New Territories.
Microbios. 1993;73(295):113-21.
A study on the copper accumulation by resting cells of copper-resistant bacteria, isolated from activated sludge and electroplating effluent, was conducted. The best selected strain, identified as Pseudomonas putida II-11, retained copper ions, Cu(II), as high as 6.5% of its dry weight. Bacterial cells grown in the sulphate-limiting medium had the highest copper removal capacity [RC, mg of Cu(II)/g of dry cells], while the presence of glucose or sodium azide did not affect Cu(II) RC of the bacterial cells. A possible mechanism of Cu(II) accumulation by this bacterium is suggested.
对从活性污泥和电镀废水中分离出的耐铜细菌的静止细胞积累铜的情况进行了研究。筛选出的最佳菌株被鉴定为恶臭假单胞菌II-11，其保留的铜离子（Cu(II)）高达其干重的6.5%。在硫酸盐限制培养基中生长的细菌细胞具有最高的铜去除能力[RC，毫克Cu(II)/克干细胞]，而葡萄糖或叠氮化钠的存在并不影响细菌细胞对Cu(II)的RC。本文提出了该细菌积累Cu(II)的一种可能机制。
