Screening, Identification and Characterization of a Cyanoethylated Wastepaper-degrading Bacteria

A cyanoethylated wastepaper-degrading bacterial strain S11 was screened from the surface humus soil in the forest of Yunnan University. The bacterium was identified through analysis of morphological, biological and biochemical features and 16S rRNA sequence. Si 1 enjoyed above 99% homology with Ochrobactrum sp.CRRI29's 16S rDNA sequence, therefore the baterium belonged to Ochrobactrum sp. The research on degradation features of S11 revealed that S11 bacterium could effectively degrade cyanoethylated wastepaper under 35 degrees C, pH 11.0, 25% inoculum size and 50g/L substrate concentration; under the optimum conditions, the degradation rate of cyanoethylated wastepaper was 46.83% after degradation by S11 bacterium for 192 hours.