| 1. |
- Bergh, Anders, et al.
(author)
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Carbohydrate functionalization using cationic iron carbonyl complexes
- 2008
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In: Carbohydrate Research. - : Elsevier BV. - 1873-426X .- 0008-6215. ; 343:10-11, s. 1808-1813
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Journal article (peer-reviewed)abstract
- Cationic iron carbonyl cyclohexadiene complexes were employed in the derivatization of the 3-OH position of unprotected and protected methyl beta-D-galactopyranosides using two different approaches, giving access to galactopyranosides with an aromatic or cyclohexadienoic functionality in this position. (c) 2008 Elsevier Ltd. All rights reserved.
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| 2. |
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| 3. |
- Fouladvand, Sheedeh, 1984, et al.
(author)
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Methane oxidation over Pd supported on ceria–alumina under rich/lean cycling conditions
- 2013
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In: Topics in Catalysis. - : Springer Science and Business Media LLC. - 1572-9028 .- 1022-5528. ; 56:1-8, s. 410-415
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Journal article (peer-reviewed)abstract
- Catalysts with highly dispersed palladium on alumina, alumina doped with 20 wt% ceria and ceria have been prepared, characterized and examined for net-lean methane oxidation. In particular, the activity and selectivity were investigated during rich/lean cycling of the feed. The ceria content is found to influence both the general and the instantaneous activity responses. The results indicate that the active phase of palladium changes between reduced and oxidised Pd during the rich/lean cycling, and that the process is influenced by the presence of ceria.
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| 4. |
- Singh, Priyanka, et al.
(author)
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Anti-biofilm effects of gold and silver nanoparticles synthesized by the Rhodiola rosea rhizome extracts
- 2018
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In: Artificial Cells, Nanomedicine and Biotechnology. - : Informa UK Limited. - 2169-1401 .- 2169-141X. ; 46:sup3, s. S886-S899
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Journal article (peer-reviewed)abstract
- Bacterial biofilm represents a major problem in medicine. They colonize and damage medical devices and implants and, in many cases, foster development of multidrug-resistant microorganisms. Biofilm development starts by bacterial attachment to the surface and the production of extracellular polymeric substances (EPS). The EPS forms a structural scaffold for dividing bacterial cells. The EPS layers also play a protective role, preventing the access of antibiotics to biofilm-associated microorganisms. The aim of this work was to investigate the production nanoparticles that could be used to inhibit biofilm formation. The applied production procedure from rhizome extracts of Rhodiola rosea is simple and environmentally friendly, as it requires no additional reducing, stabilizing and capping agents. The produced nanoparticles were stable and crystalline in nature with an average diameter of 13–17 nm for gold nanoparticles (AuNPs) and 15–30 nm for silver nanoparticles (AgNPs). Inductively coupled plasma mass spectrometry analysis revealed the concentration of synthesized nanoparticles as 3.3 and 5.3 mg/ml for AuNPs and AgNPs, respectively. Fourier-transform infrared spectroscopy detected the presence of flavonoids, terpenes and phenols on the nanoparticle surface, which could be responsible for reducing the Au and Ag salts to nanoparticles and further stabilizing them. Furthermore, we explored the AgNPs for inhibition of Pseudomonas aeruginosa and Escherichia coli biofilms. AgNPs exhibited minimum inhibitory concentrations of 50 and 100 µg/ml, against P. aeruginosa and E. coli, respectively. The respective minimum bactericidal concentrations were 100 and 200 µg/ml. These results suggest that using the rhizome extracts of the medicinal plant R. rosea represents a viable route for green production of nanoparticles with anti-biofilm effects.
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