By a News Reporter-Staff News Editor at Science Letter -- Research findings on Antioxidants are discussed in a new report. According to news originating from Potsdam, New York, by NewsRx correspondents, research stated, "With increased awareness of nutrition and the advocacy for healthier food choices, there exists a great demand for a simple, easy-to-use test that can reliably measure the antioxidant capacity of dietary products. We report development and characterization of a portable nanoparticle based-assay, similar to a small sensor patch, for rapid and sensitive detection of food antioxidants."
Our news journalists obtained a quote from the research from the Department of Chemistry and Biomolecular Science, "The assay is based on the use of immobilized ceria nanoparticles, which change color after interaction with antioxidants by means of redox and surface chemistry reactions. Monitoring corresponding optical changes enables sensitive detection of antioxidants in which the nanoceria provides an optical 'signature' of antioxidant power, while the antioxidants act as reducing agents. The sensor has been tested for the detection of common antioxidant compounds including ascorbic acid, gallic acid, vanillic acid, quercetin, caffeic acid, and epigallocatechin gallate and its function has been successfully applied for the assessment of antioxidant activity in real samples (teas and medicinal mushrooms). The colorimetric response was concentration dependent, with detection limits ranging from 20 to 400 ?M depending on the antioxidant involved. Steady-state color intensity was achieved within seconds upon addition of antioxidants. The results are presented in terms of Gallic Acid Equivalents (GAE). The sensor performed favorably when compared with commonly used antioxidant detection methods. This assay is particularly appealing for remote sensing applications, where specialized equipment is not available, and also for high throughput analysis of a large number of samples."
According to the news editors, the research concluded: "Potential applications for antioxidant detection in remote locations are envisioned."
For more information on this research see: Portable ceria nanoparticle-based assay for rapid detection of food antioxidants (NanoCerac). Analyst, 2013;138(1):249-62. (Royal Society of Chemistry - www.rsc.org/; Analyst - pubs.rsc.org/en/journals/journalissues/an)
The news correspondents report that additional information may be obtained from E. Sharpe, Dept. of Chemistry and Biomolecular Science, Potsdam, NY 13699-5810, United States. Additional authors for this research include T. Frasco, D. Andreescu and S. Andreescu (see also Antioxidants).
Keywords for this news article include: Antioxidants, Potsdam, New York, United States, Protective Agents, North and Central America.
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