News Column

Researchers from Aalto University Describe Findings in Hydrochloric Acid

May 14, 2014

By a News Reporter-Staff News Editor at Biotech Week -- Investigators publish new report on Hydrochloric Acid. According to news reporting from Aalto, Finland, by NewsRx journalists, research stated, "A novel biosensor for lactate has been developed, using screen-printed carbon electrodes (SPCE) and lactate oxidase (LOx). The active surface of the electrodes was modified using a dispersion of platinum nanoparticle decorated carbon nanofibers (PtNp-CNF) in poly(diallyldimethylammonium) chloride (PDDA) solution."

The news correspondents obtained a quote from the research from Aalto University, "In this way, sensitive, disposable, low cost and reliable hydrogen peroxide sensors were obtained. The immobilisation of LOx on top of these PtNp-CNF-PDDA/SPCEs resulted in amperometric biosensors with high operational stability. The sensitivity of the optimised lactate biosensor was 36.8 (mA/M cm(2)) with a linear range of 25-1500 mu M. The limit of detection was 11 mu M (S/N=3). Reproducibility, selectivity and storage stability were also evaluated. Additionally, the stability of the biosensor was also predicted by a model based on thermal degradation. Finally, lactate in sweat and blood samples was determined in a sport test using LOx/PtNp-CNF-PDDA/SPCEs and commercial biosensors respectively."

According to the news reporters, the research concluded: "Based on these data, the validity of the sweat lactate for the determination of the lactate threshold is discussed."

For more information on this research see: Disposable amperometric biosensor based on lactate oxidase immobilised on platinum nanoparticle-decorated carbon nanofiber and poly(diallyldimethylammonium chloride) films. Biosensors & Bioelectronics, 2014;56():345-351. Biosensors & Bioelectronics can be contacted at: Elsevier Advanced Technology, Oxford Fulfillment Centre The Boulevard, Langford Lane, Kidlington, Oxford OX5 1GB, Oxon, England. (Elsevier -; Biosensors & Bioelectronics -

Our news journalists report that additional information may be obtained by contacting P.J. Lamas-Ardisana, Aalto Univ, Sch Sci, Dept. of Appl Phys, Aalto 00076, Finland. Additional authors for this research include O.A. Loaiza, L. Anorga, E. Jubete, M. Borghei, V. Ruiz, E. Ochoteco, G. Cabanero and H.J. Grande (see also Hydrochloric Acid).

Keywords for this news article include: Aalto, Europe, Anions, Finland, Oxidase, Chlorides, Biosensing, Bioengineering, Bionanotechnology, Hydrochloric Acid, Nanobiotechnology, Emerging Technologies, Enzymes and Coenzymes, Platinum Nanoparticles

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Source: Biotech Week

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