113 mu mol L(-1) for 4-methoxyphenol, 40 nA (mu mol L(-1))-1 for

113 mu mol L(-1) for 4-methoxyphenol, 40 nA (mu mol L(-1))-1 for pyrocatechol, respectively.

Results showed that sensitivities were at least 8500-55000 times higher than the results in previous P(GMA-co-VFc) related studies.

CONCLUSION: Facilitated electron transfer was achieved by means of mediator incorporated in conductive composites of VFc based redox copolymers. The effect was greater when enzyme was covalently bonded via epoxy groups due to the proximity of enzyme, mediator and electrode surface. Results showed that a multifunctional surface was provided on electrodes since the suggested copolymers could mediate an electrochemical reaction, and the multifunctional GSK2118436 price surface was capable of coating with conductive PPy. (C) 2011 Society of Chemical Industry”
“Two CX-6258 in vivo new alkaloids, named 1,1-dimethyl-6-methoxy-7-hydroxyl-1,2,3,4-tetrahydroisoquinoline (1) and (1R)-(4-hydroxybenzyl)-7-hydroxyl-8-O–d-glucopyranosyl-1,2,3,4-tetrahydroisoquinoline (2), together with 11 known compounds (3-13), were isolated from the tubers of Corydalis humosa. Their structures were elucidated on the basis of

their spectroscopic and chemical evidence.”
“BACKGROUND: A novel bacterial strain, Gulosibacter sp. YZ4, has been isolated from activated sludge. Its

application potential for phenol biodegradation has not yet been reported, therefore, in this study, biodegradation tests using strain YZ4 were executed under different conditions.

RESULTS: The strain was identified as a new member of the genus Gulosibacter and nominated as Gulosibacter sp. YZ4. Phenol biodegradation tests showed that strain YZ4 could thoroughly biodegrade 1000 mg L(-1) phenol across a wide temperature range from 10 to 42 degrees C and pH range 5 to 11. Degradation of 1000 mg L(-1) phenol was not inhibited by the coexistence of p-cresol or quinoline. During phenol degradation, strain YZ4 learn more excreted both phenol hydroxylase and catechol 1,2-dioxygenase to efficiently metabolize phenol. At 36 degrees C, pH 7.5, strain YZ4 could effectively degrade phenol at concentrations as high as 2000 mg L(-1) within 76 h. Haldane’s model with the parameters obtained from the experiments could successfully describe the behavior of the phenol biodegradation by the strain YZ4.

CONCLUSIONS: The strain YZ4 has a high potential for applications in phenol wastewater treatment in view of its adaptability to temperature and pH fluctuations and great tolerance to other coexistent toxics.

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