Xuzhou Institute of Technology

About: Xuzhou Institute of Technology is a education organization based out in Xuzhou, China. It is known for research contribution in the topics: Catalysis & Adsorption. The organization has 1696 authors who have published 1521 publications receiving 13541 citations.

One-Pot Synthesis of Bi/Fe3O4 and Its Catalytic Performances for 4-Nitrophenol Reduction

Abstract: A novel approach was successfully developed for the catalyst Bi-deposited Fe 3 O 4 magnetic nanoparticles, which was used in the degradation of 4-nitrophenol (4-NP). The Bi/Fe 3 O 4 composite was prepared via a one-pot process from ferrous sulfate and bismuth chloride using hydrazine hydrate as a reducing agent. The catalyst was characterized by X-ray diffraction (XRD) and Fourier transform infrared (FTIR) spectroscopy. In the composite pure Fe 3 O 4 particles were synthesized and bismuth particles were well dispersed. The catalytic performances were investigated for the reduction of 4-NP with sodium borohydride. The catalyst has higher activity when Bi/Fe molar ratio is 1:4 in the composite and the rate constant k is about 0.611 min -1 . The catalyst has good reusability which can be used 10 cycles without obvious deactivation. Furthermore, the catalyst can be easily separated by an external magnetic field. Copyright © 2017 BCREC GROUP. All rights reserved Received: 11 st August 2016; Revised: 20 th December 2016; Accepted: 21 st December 2016 How to Cite: Cai, K.Y., Liu, Y.S., Xu, Y., Zhou, H., Zhang, L., Cui., Y. (2017). One-Pot Synthesis of Bi/Fe 3 O 4 and Its Catalytic Performances for 4-Nitrophenol Reduction. Bulletin of Chemical Reaction Engineering & Catalysis , 12 (1): 89-95 (doi:10.9767/bcrec.12.1.621.89-95) Permalink/DOI: http://dx.doi.org/10.9767/bcrec.12.1.621.89-95

1-(4-Amino-2-hydroxyphenyl)ethanone from Phomopsis liquidambari showed quorum sensing inhibitory activity against Pseudomonas aeruginosa

Abstract: Phomopsis liquidambari S47 is an endophytic fungus isolated from the leaves of Punica granatum. Here, we are the first to report a quorum sensing (QS) inhibitor 1-(4-amino-2-hydroxyphenyl)ethanone (AHE) isolated and identified from the metabolites of P. liquidambari S47. Exposure to AHE at sub-MIC concentrations notably suppressed the secretion of acyl-homoserine lactones and virulence factors in Pseudomonas aeruginosa PAO1. To investigate the metabolic variations of P. aeruginosa PAO1 exposed to AHE, magnetic resonance imaging-based metabolomic analysis was performed. AHE treatment created a disturbance in the QS system by suppressing the expressions of QS-related genes. The disturbed QS system resulted in the inhibited activity of antioxidant enzymes and thus enhanced oxidative stress. The vegetable infection assay showed that the virulence of P. aeroginosa PAO1 was attenuated which could be due to the impacts to the amino acid and nucleotide metabolism by enhanced oxidative stress. These findings suggest that AHE has a potential to become an antivirulence "agent" to tackle P. aeruginosa infection. KEY POINTS: • AHE treatment inhibited AHL secretion and virulence factors production. • AHE treatment aggravated oxidative stress and disturbed metabolism. • AHE suppressed QS-related gene expressions and reduced virulence of P. aeruginosa.

Determination of native contents of 4′-O-methylpyridoxine and its glucoside in raw and heated Ginkgo biloba seeds by high-performance liquid chromatography

Abstract: 4′-O-methylpyridoxine (MPN) and its 5′-glucoside (MPNG) in Ginkgo biloba seeds cause poisoning. Sample preparation for high-performance liquid chromatography was optimized to determine the amounts of MPN and MPNG at various extraction temperatures and pH levels. The effects of heating treatment on MPN and MPNG were investigated. MPNG was the main MPN analog in raw G. biloba seeds under the optimal temperature (0 °C) and pH (2.5). Boiling decreased the contents of MPN (81.76%), MPNG (9.15%), and total MPN (TMPN, 30.14%). The contents of MPN and TMPN considerably decreased (80.41% and 20.11%, respectively), whereas that of MPNG increased (4.42%) after microwave treatment. Results demonstrate that boiling can reduce the toxicity of G. biloba seeds for consumption.