News Column

Recent Studies from King Abdullah University of Science and Technology Add New Data to Peroxidases

May 6, 2014



By a News Reporter-Staff News Editor at Life Science Weekly -- Fresh data on Enzymes and Coenzymes are presented in a new report. According to news reporting originating in Thuwal, Saudi Arabia, by NewsRx journalists, research stated, "We report a new family of hierarchical hybrid catalysts comprised of horseradish peroxidase (HRP)-magnetic nanoparticles for advanced oxidation processes and demonstrate their utility in the removal of phenol from water. The immobilized HRP catalyzes the oxidation of phenols in the presence of H2O2, producing free radicals."

The news reporters obtained a quote from the research from the King Abdullah University of Science and Technology, "The phenoxy radicals react with each other in a non-enzymatic process to form polymers, which can be removed by precipitation with salts or condensation. The hybrid peroxidase catalysts exhibit three times higher activity than free HRP and are able to remove three times more phenol from water compared to free HRP under similar conditions. In addition, the hybrid catalysts reduce substrate inhibition and limit inactivation from reaction products, which are common problems with free or conventionally immobilized enzymes. Reusability is improved when the HRP-magnetic nanoparticle hybrids are supported on micron-scale magnetic particles, and can be retained with a specially designed magnetically driven reactor."

According to the news reporters, the research concluded: "The performance of the hybrid catalysts makes them attractive for several industrial and environmental applications and their development might pave the way for practical applications by eliminating most of the limitations that have prevented the use of free or conventionally immobilized enzymes."

For more information on this research see: Hierarchical Hybrid Peroxidase Catalysts for Remediation of Phenol Wastewater. Chemphyschem, 2014;15(5):974-980. Chemphyschem can be contacted at: Wiley-V C H Verlag Gmbh, Boschstrasse 12, D-69469 Weinheim, Germany. (Wiley-Blackwell - www.wiley.com/; Chemphyschem - onlinelibrary.wiley.com/journal/10.1002/(ISSN)1439-7641)

Our news correspondents report that additional information may be obtained by contacting X.N. Duan, King Abdullah Univ Sci & Technol, Div Chem & Life Sci & Engn, Thuwal 239556900, Saudi Arabia. Additional authors for this research include S.C. Corgie, D.J. Aneshansley, P. Wang, L.P. Walker and E.P. Giannelis (see also Enzymes and Coenzymes).

Keywords for this news article include: Asia, Thuwal, Phenols, Peroxidases, Saudi Arabia, Oxidoreductases, Enzymes and Coenzymes

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Source: Life Science Weekly