title: [FTIR spectrum and detoxication of extracellular polymeric substances secreted by microorganism].
abstract: In order to explore the effect of extracelluar polymeric substances (EPS) on resistance and removal of heavy metals, the production of EPS, secreted by cadmium-resistant strain (SCSE425-7) and cadmium-removal strain (SCSE709-6) was investigated combined with Fourier transform infrared spectroscopy (FTIR). The results showed that the high resistance to cadmium of strain SCSE425-7 was related to the high production of soluble EPS, whereas SCSE709-6 secreted more insoluble EPS resulting in better cadmium removal performance. It was indicated that soluble extracellular carbohydrates may help the bacteria to enhance resistance to Cd2+, and insoluble EPS could contribute to Cd2+ removal effectively. The FTIR spectra showed that the peaks of amide and carboxyl were main functional groups for Cd2+ adsorption.
authors.affiliation: School of Environmental Science and Engineering, Shandong University, Ji'nan 250100, China. seagull880613@163.com
authors.forename: Hai-Ou
authors.initials: HO
authors.lastname: Zhang
authors.affiliation: School of Environmental Science and Engineering, Shandong University, Ji'nan 250100, China.
authors.forename: Wei-Zhi
authors.initials: WZ
authors.lastname: Zhou
authors.affiliation: School of Environmental Science and Engineering, Shandong University, Ji'nan 250100, China.
authors.forename: Yu-Hong
authors.initials: YH
authors.lastname: Ma
authors.affiliation: School of Environmental Science and Engineering, Shandong University, Ji'nan 250100, China.
authors.forename: Hai-Xia
authors.initials: HX
authors.lastname: Zhao
authors.affiliation: State Key Lab of Microbial Technology, Shandong University, Ji'nan 250100, China.
authors.forename: Yu-Zhong
authors.initials: YZ
authors.lastname: Zhang
mesh_terms: D000327:Adsorption; D001419:Bacteria / Q000737:chemistry*; D001673:Biodegradation, Environmental; D002104:Cadmium; D002241:Carbohydrates / Q000737:chemistry*; D019216:Metals, Heavy; D011108:Polymers / Q000737:chemistry*; D017550:Spectroscopy, Fourier Transform Infrared
chemical_list: D002241:Carbohydrates; D019216:Metals, Heavy; D011108:Polymers; D002104:Cadmium