Hundt K, Wagner M, Becher D, Hammer E, Schauer F
Institut für Mikrobiologie und Molekularbiologie, Ernst-Moritz-Arndt-Universität Greifswald, Friedrich-Ludwig-Jahnstr, Germany.
Chemosphere. 1998 Apr;36(10):2321-35. doi: 10.1016/s0045-6535(97)10201-6.
By varying selected environmental factors, the degradation and mineralization of biaryl compounds by the bacterium Ralstonia pickettii in soil and compost were investigated. An optimized soil moisture and enhanced bioavailability by using the nonionic surfactant Tween 80 were of great importance for the degradation rates of biaryl compounds like biphenyl and 4-chlorobiphenyl by cells of Ralstonia picketti SBUG 290 inoculated into soil. Additionally, degradation of these compounds by the investigated strain in soil was strongly dependent upon the medium of precultivation. Also the influence of temperature and soil pH-value was tested. In contrast to the used soil, the autochthonous flora of the compost seemed to have a higher physiological activity. All investigated compounds (biphenyl, 4-chlorobiphenyl and dibenzofuran) were degraded quickly in compost. Inoculation with the investigated bacterium did not enhance the degradation rates significantly.
通过改变选定的环境因素，研究了皮氏罗尔斯通氏菌对土壤和堆肥中联芳基化合物的降解和矿化作用。优化土壤湿度以及使用非离子表面活性剂吐温80提高生物利用度，对于接种到土壤中的皮氏罗尔斯通氏菌SBUG 290细胞对联苯和4-氯联苯等联芳基化合物的降解速率至关重要。此外，所研究菌株在土壤中对这些化合物的降解强烈依赖于预培养的培养基。还测试了温度和土壤pH值的影响。与所用土壤相比，堆肥中的原生菌群似乎具有更高的生理活性。所有研究的化合物（联苯、4-氯联苯和二苯并呋喃）在堆肥中都能快速降解。接种所研究的细菌并没有显著提高降解速率。
