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- 저자 : Bor-Yann Chen (검색결과 2 건)
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I-Son Ng,Xuesong Zheng,Bor-Yann Chen,Xiaoqin Chi,Yinghua Lu,Chun-Sheng Chang 한국생물공학회 2013 Biotechnology and Bioprocess Engineering Vol.18 No.1
The first-attempt study employed a proteomics strategy for the identification of abundant proteins from a bioelectricity generation and dye decolorization bacterium Proteus hauseri ZMd44. By using the degenerated primers designed based on the peptide sequences from tandem mass spectroscopy and the whole genomics annotation of the closely associated strain, Proteus penneri ATCC 35198,the genes were successfully obtained for two full-length genes of 543 bp (laccase) and 1,086 bp (Omp F, porin)encoding to 181 amino acids and 362 amino acids,respectively. It explored laccase and NADH dehydrogenase involvement in the oxidation-reduction reaction as well, as porin played an important role in providing channels for related proteins in the accomplishment of electron transportation in P. hauseri. Detailed enzymatic assays indicated that laccase activity of 542.2 U/DCW could be stimulated by 2.5 mM copper induction in LB medium (ca. 293-fold to those without copper induction). Among intracellular proteins, NADH dehydrogenase activity of 257.2 U/mg via mediator riboflavin was in parallel with the decolorizing capability of azo dye Rb160 that only took place in LB medium. From the evaluation of kinetic parameters (Vmax and Km were 0.272 U/min and 0.393 mM with ABTS,0.046 U/min and 43.8 μM with NADH), it is better to decipher the decolorization mechanism of ZMd44 indicating that laccase and NADH dehydrogenase played the most crucial role for azo dye decolorization.
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Jun-Ming Hong,Bing Lin,Jie-Shan Jiang,Bor-Yann Chen,Chang-Tang Chang 한국공업화학회 2014 Journal of Industrial and Engineering Chemistry Vol.20 No.5
Mesoporous material Q-MCM and EX-Q-MCM were synthesized using waste quartz (99.9% SiO2) sand as a silicon source via the sol–gel method. The silicon source was extracted from the waste quartz sand using the hydrothermal method. This study selected methylene blue as a target dye to investigate the dye adsorption performance onto the EX-Q-MCM. The effects on adsorption performance under different initial dye concentrations and different pH values were also studied. The results show that the maximum adsorption capacity was 96.9 mg g 1 and a high pH is favorable for adsorption. Further, equilibrium isotherms of the adsorption of methylene blue on EX-Q-MCM are well described by the Freundlich model. It reveals that the adsorption of methylene blue onto the Q-MCM is a multilayer adsorption.
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