Home > Press > Scientists Use Gold/Silver Nanoalloy to Measure Oxidant Compounds Accurately
Abstract:
A sensitive and accurate method was designed by chemists from University of Mazandaran, Northern Iran, to measure antioxidant compounds, including vitamin C, in biological samples.
Scientists Use Gold/Silver Nanoalloy to Measure Oxidant Compounds Accurately
Tehran, Iran | Posted on March 11th, 2014In addition to accurately measuring vitamin C in drug products, this method can also be used in measuring vitamin C at concentrations of 0.01 µg/mL in standard samples.
Taking into account the importance of the daily amount of vitamin C consumed by human body as food supplement, the researchers tried to introduce a selective, sensitive and accurate method to measure vitamin C in medical products based on its antioxidant properties.
In this research, the increase in sensitivity and decrease in diagnose limit of chemiluminescence system was made possible by producing gold/silver nanoalloy as the catalyst and introducing it in combination with Amplex red. Amplex red has unique luminescence properties (its oxidized form has fluorescence - chemiluminescence ability), and it is used as the probe. The observation of fluorescence caused by Amplex red in the absence of vitamin C a few minutes after the end of luminescence reaction confirms the presence of hydrogen peroxide as the oxidant in chemiluminescence system. In fact, hydrogen peroxide and its other active forms make possible the oxidation of Amplex red and its conversion into fluorescence form. Vitamin C, having antioxidant properties, is able to decompose hydrogen peroxide and disturb chemiluminescence reaction. Therefore, the designed luminescence system was used in the measurement of vitamin C in medical products.
Among the characteristics of the research, mention can be made of the simultaneous use of gold/silver alloy and Amplex red compound as strengthening agents of peroxyoxalate chemiluminescence system, and dual performance of Amplex red as fluorescence agent and probe that expresses the mechanism of vitamin C effect on chemiluminescence system.
Results of the research have been published in Journal of Luminescence, vol. 134, issue 3, February 2013, pp. 195-200.
####
For more information, please click here
Copyright © Fars News Agency
If you have a comment, please Contact us.Issuers of news releases, not 7th Wave, Inc. or Nanotechnology Now, are solely responsible for the accuracy of the content.
Bookmark:
| Related News Press |
News and information
Sensors innovations for smart lithium-based batteries: advancements, opportunities, and potential challenges August 8th, 2025
Deciphering local microstrain-induced optimization of asymmetric Fe single atomic sites for efficient oxygen reduction August 8th, 2025
Lab to industry: InSe wafer-scale breakthrough for future electronics August 8th, 2025
Chemistry
Cambridge chemists discover simple way to build bigger molecules – one carbon at a time June 6th, 2025
Single-atom catalysts change spin state when boosted by a magnetic field June 4th, 2025
Quantum interference in molecule-surface collisions February 28th, 2025
Chainmail-like material could be the future of armor: First 2D mechanically interlocked polymer exhibits exceptional flexibility and strength January 17th, 2025
Discoveries
Deciphering local microstrain-induced optimization of asymmetric Fe single atomic sites for efficient oxygen reduction August 8th, 2025
ICFO researchers overcome long-standing bottleneck in single photon detection with twisted 2D materials August 8th, 2025
New molecular technology targets tumors and simultaneously silences two ‘undruggable’ cancer genes August 8th, 2025
Simple algorithm paired with standard imaging tool could predict failure in lithium metal batteries August 8th, 2025
Announcements
Sensors innovations for smart lithium-based batteries: advancements, opportunities, and potential challenges August 8th, 2025
Deciphering local microstrain-induced optimization of asymmetric Fe single atomic sites for efficient oxygen reduction August 8th, 2025
Japan launches fully domestically produced quantum computer: Expo visitors to experience quantum computing firsthand August 8th, 2025
ICFO researchers overcome long-standing bottleneck in single photon detection with twisted 2D materials August 8th, 2025
Interviews/Book Reviews/Essays/Reports/Podcasts/Journals/White papers/Posters
New molecular technology targets tumors and simultaneously silences two ‘undruggable’ cancer genes August 8th, 2025
Simple algorithm paired with standard imaging tool could predict failure in lithium metal batteries August 8th, 2025
First real-time observation of two-dimensional melting process: Researchers at Mainz University unveil new insights into magnetic vortex structures August 8th, 2025
Lab to industry: InSe wafer-scale breakthrough for future electronics August 8th, 2025
Food/Agriculture/Supplements
New imaging approach transforms study of bacterial biofilms August 8th, 2025
SMART researchers pioneer first-of-its-kind nanosensor for real-time iron detection in plants February 28th, 2025
Silver nanoparticles: guaranteeing antimicrobial safe-tea November 17th, 2023
 |
||
 |
||
| The latest news from around the world, FREE | ||
 |
||
|
|
||
| Premium Products | ||
 |
||
|
Only the news you want to read!
Learn More |
||
 |
||
|
Full-service, expert consulting
Learn More |
||
|
|
||