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Studies from Malmo University Yield New Information about Gold Nanoparticles (Comparison of bioelectrocatalysis at Trichaptum abietinum and Trametes...

July 8, 2014



Studies from Malmo University Yield New Information about Gold Nanoparticles (Comparison of bioelectrocatalysis at Trichaptum abietinum and Trametes hirsuta laccase modified electrodes)

By a News Reporter-Staff News Editor at Life Science Weekly -- Current study results on Gold Nanoparticles have been published. According to news reporting from Malmo, Sweden, by NewsRx journalists, research stated, "Bioelectrocatalytic reduction of oxygen to water at electrodes modified with gold nanoparticles and a new laccase from Trichaptum abietinum (TaLc) was studied. The bioelectrocatalytic current was found to be much higher at TaLc modified electrodes than at similarly prepared electrodes modified with a broadly used laccase from Trametes hirsuta (ThLc)."

The news correspondents obtained a quote from the research from Malmo University, "To explain this difference the bioelectrocatalysis was described in terms of kinetic rate constants based on simultaneous cyclic voltammetry and quartz crystal microbalance measurements. From analysis of the rate constants both laccases appeared to possess similar rates (k(0)) of direct electron transfer. However, the enzyme turnover (k(cat)) was about three-fold higher for gold nanoparticle bound TaLc than for ThLc, calculated using surface concentration of enzyme established by QCM-D."

According to the news reporters, the research concluded: "Near reversible potential-induced reorientation of adsorbed proteins was observed by surface enhanced Raman spectroscopy."

For more information on this research see: Comparison of bioelectrocatalysis at Trichaptum abietinum and Trametes hirsuta laccase modified electrodes. Electrochimica Acta, 2014;130():141-147. Electrochimica Acta can be contacted at: Pergamon-Elsevier Science Ltd, The Boulevard, Langford Lane, Kidlington, Oxford OX5 1GB, England (see also Gold Nanoparticles).

Our news journalists report that additional information may be obtained by contacting M. Dagys, Malmo University, Fac Hlth & Soc, Dept. of Biomed Sci, SE-20506 Malmo, Sweden. Additional authors for this research include P. Lamberg, S. Shleev, G. Niaura, I. Bachmatova, L. Marcinkeviciene, R. Meskys, J. Kulys, T. Arnebrant and T. Ruzgas.

Keywords for this news article include: Malmo, Sweden, Europe, Nanotechnology, Gold Nanoparticles, Emerging Technologies

Our reports deliver fact-based news of research and discoveries from around the world. Copyright 2014, NewsRx LLC


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Source: Life Science Weekly


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