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Findings on Peroxidases Reported by Investigators at Chonnam National University (Oxidative biodegradation of single-walled carbon nanotubes by...

September 2, 2014



Findings on Peroxidases Reported by Investigators at Chonnam National University (Oxidative biodegradation of single-walled carbon nanotubes by partially purified lignin peroxidase from Sparassis latifolia mushroom)

By a News Reporter-Staff News Editor at Life Science Weekly -- Current study results on Enzymes and Coenzymes have been published. According to news reporting out of Kwangju, South Korea, by NewsRx editors, research stated, "Two types of carbon nanotubes (usually single-walled carbon nanotubes (SWCNTs) and multi-walled carbon nanotubes (MWCNTs)) have been intensively focused on academic researches and mass-produced for wide applications such as composite materials, biosensors, and drug delivery systems. However, due to oxidative stress-dependent and physically-induced cellular toxicity of CNTs, many efforts to render biocompatible and biodegradable properties in CNTs have been highlighted."

Our news journalists obtained a quote from the research from Chonnam National University, "Thus, taking into the consideration of exposure in human health and the environment, biodegradation of CNTs as a potential disposal is highly addressed. In this study, lignin peroxidase (Lip) was isolated and partially purified from the fruiting bodies of the edible mushroom Sparassis latifolia (S. latifolia). The biodegradation of raw grade and thermally-treated carboxylated SWCNTs (denoted as ASA and AST) with this enzyme was investigated, prior to more biodegradation-resistant MWCNTs. The interactions between the SWCNTs and LiP were investigated using various techniques, and the intermediate by-products of the LiP degradation were identified. Our findings demonstrated that both ASA and AST were efficiently degraded by LiP where the producing radicals by the LiP played a critical role in the biodegradation of SWCNTs. The final degraded products were confirmed with the generation of CO2 gas."

According to the news editors, the research concluded: "Conclusively, the low extraction cost of partially purified enzyme from mushrooms can make this approach a promising alternative in environmental bioremediation as a practical application."

For more information on this research see: Oxidative biodegradation of single-walled carbon nanotubes by partially purified lignin peroxidase from Sparassis latifolia mushroom. Journal of Industrial and Engineering Chemistry, 2014;20(5):3367-3374. Journal of Industrial and Engineering Chemistry can be contacted at: Elsevier Science Inc, 360 Park Ave South, New York, NY 10010-1710, USA. (Elsevier - www.elsevier.com; Journal of Industrial and Engineering Chemistry - www.elsevier.com/wps/product/cws_home/713562)

Our news journalists report that additional information may be obtained by contacting G. Chandrasekaran, Chonnam National University, Dept. of Biol Sci, Coll Nat Sci, Kwangju 500757, South Korea. Additional authors for this research include S.K. Choi, Y.C. Lee, G.J. Kim and H.J. Shin (see also Enzymes and Coenzymes).

Keywords for this news article include: Asia, Kwangju, Fullerenes, South Korea, Peroxidases, Nanotechnology, Oxidoreductases, Carbon Nanotubes, Emerging Technologies, Enzymes and Coenzymes

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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