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Investigators from University of Sao Paulo Have Reported New Data on Carboxylic Ester Hydrolases (Enzymatic hydrolysis of quinizarin diester by...

July 15, 2014



Investigators from University of Sao Paulo Have Reported New Data on Carboxylic Ester Hydrolases (Enzymatic hydrolysis of quinizarin diester by lipase in silica nanoparticles investigated by fluorescence microscopy)

By a News Reporter-Staff News Editor at Life Science Weekly -- Investigators publish new report on Enzymes and Coenzymes. According to news reporting out of Sao Carlos, Brazil, by NewsRx editors, research stated, "The enzymatic hydrolysis of quinizarin diester in silica nanoparticle (NP) of 200 nm diameter is investigated by confocal fluorescence microscopy. The quinizarin diester substrate and the intermediate quinizarin monoester are non-fluorescent species and only the end product-quinizarin formed by enzymatic hydrolysis produces intense fluorescence of the silica NP."

Our news journalists obtained a quote from the research from the University of Sao Paulo, "The enzyme activity of lipase adsorbed into silica NP was similar to that observed for lipase chemically bound to silica surface. In both situations, partial aggregation of the silica NP dispersed in thin film of polyvinylpyrrolidone was observed from fluorescence and scanning electron microscopy images. The fluorescence decay of the end product-quinizarin in silica NP was biexponential with decay times of 0.49 and 2.17 ns."

According to the news editors, the research concluded: "These two decay times found are ascribed to quinizarin adsorbed in silica NP and dispersed in the surrounding medium, respectively."

For more information on this research see: Enzymatic hydrolysis of quinizarin diester by lipase in silica nanoparticles investigated by fluorescence microscopy. Journal of Nanoparticle Research, 2014;16(6):1-7. Journal of Nanoparticle Research can be contacted at: Springer, Van Godewijckstraat 30, 3311 Gz Dordrecht, Netherlands. (Springer - www.springer.com; Journal of Nanoparticle Research - www.springerlink.com/content/1388-0764/)

Our news journalists report that additional information may be obtained by contacting C.A. Sabatini, University of Sao Paulo, Inst Quim Sao Carlos, BR-13566590 Sao Carlos, SP, Brazil (see also Enzymes and Coenzymes).

Keywords for this news article include: Brazil, Lipase, Sao Carlos, Nanoparticle, South America, Nanotechnology, Silicon Nanocrystals, Emerging Technologies, Enzymes and Coenzymes, Carboxylic Ester Hydrolases

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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