Carbon source type can affect tetracycline removal by Pseudomonas sp. TC952 through regulation of extracellular polymeric substances composition and production

The objective of this work is to elucidate the mechanism tetracycline (TC) removal by Pseudomonas sp. TC952. TC characteristics strain TC952 under various environmental conditions were studied. Results showed that bio-removal efficiency was significantly affected initial and peptone concentration, pH values, divalent metal ion (Zn2+) carbon source, efficiently removed approximately 72.8% within 6 days with 10 g/L peptone. best for remove are as follows: concentration 50 mg/L, solution 7, Zn2+ 0.1 μg/L, source And through intra- extracellular fractions assay polymeric substances (EPS) component analysis, mainly attributed adsorption bacterial EPS cell. Furthermore, different production content TC952, so produced serine could bio-adsorb formed a buffer area outside cells, thus reducing or preventing from entering bacteria cells. All results obtained secretion cell wall may be common way reduce in environment, which brought novel insights better management contamination functional understanding natural process antibiotics microorganisms environment.