De Jaysankar, Sarkar A, Ramaiah N
National Institute of Oceanography, Dona Paula, Goa 403 004, India.
Ecotoxicology. 2006 May;15(4):385-9. doi: 10.1007/s10646-006-0066-4. Epub 2006 May 4.
Bioremediation of toxic substances includes microbe-mediated enzymatic transformation of toxicants to non-toxic, often assimilable, forms. Mercury-resistant marine bacteria are found to be very promising in dealing with mercury, and a host of other highly toxic heavy metals and xenobiotics. In the present studies we have shown that the Pseudomonas aeruginosa CH07 (NRRL B-30604) has been able to degrade a variety of PCB congeners including a complete degradation of CB-126 and CB-181. The culture was able to remove over 70% Cd from growth medium when supplemented with 100 ppm Cd. The same bacterium rapidly biotransformed/removed toxic mercury from wastewater in a bioreactor system.
有毒物质的生物修复包括微生物介导的将有毒物质转化为无毒且通常可同化形式的酶促反应。人们发现抗汞海洋细菌在处理汞以及许多其他剧毒重金属和外源化合物方面非常有前景。在本研究中，我们已经表明铜绿假单胞菌CH07（NRRL B - 30604）能够降解多种多氯联苯同系物，包括对CB - 126和CB - 181的完全降解。当在生长培养基中添加100 ppm镉时，该培养物能够从生长培养基中去除超过70%的镉。同一细菌在生物反应器系统中能快速将废水中的有毒汞进行生物转化/去除。
