Nanotechnology Now







Heifer International

Wikipedia Affiliate Button


DHgate

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, 2014

In addition to accurately measuring vitamin C in drug products, this method can also be used in measuring vitamin C at concentrations of 0.01 g/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:
Delicious Digg Newsvine Google Yahoo Reddit Magnoliacom Furl Facebook

Related News Press

News and information

Toyocolor to Launch New Carbon Nanotube Materials at nano tech 2015 January 24th, 2015

NANOPOSTER 2015 - 5th Virtual Nanotechnology Conference - call for abstracts January 24th, 2015

Nanosensor Used for Simultaneous Determination of Effective Tea Components January 24th, 2015

The latest fashion: Graphene edges can be tailor-made: Rice University theory shows it should be possible to tune material's properties January 24th, 2015

Chemistry

Anti-microbial coatings with a long-term effect for surfaces presentation at nano tech 2015 in Japan January 21st, 2015

Hydrogels deliver on blood-vessel growth: Rice researchers introduce improved injectable scaffold to promote healing January 20th, 2015

Graphene enables all-electrical control of energy flow from light emitters: First signatures of graphene plasmons at telecommunications wavelength revealed January 20th, 2015

Nanotechnology Used to Produce Ceramic Membrane with High Thermal Stability January 19th, 2015

Discoveries

Nanosensor Used for Simultaneous Determination of Effective Tea Components January 24th, 2015

The latest fashion: Graphene edges can be tailor-made: Rice University theory shows it should be possible to tune material's properties January 24th, 2015

Iranian Scientists Produce Graphene-Based Oxygen Sensor January 23rd, 2015

Silver nanowires demonstrate unexpected self-healing mechanism: The material has potential for flexible electronics January 23rd, 2015

Announcements

Toyocolor to Launch New Carbon Nanotube Materials at nano tech 2015 January 24th, 2015

NANOPOSTER 2015 - 5th Virtual Nanotechnology Conference - call for abstracts January 24th, 2015

Nanosensor Used for Simultaneous Determination of Effective Tea Components January 24th, 2015

The latest fashion: Graphene edges can be tailor-made: Rice University theory shows it should be possible to tune material's properties January 24th, 2015

Interviews/Book Reviews/Essays/Reports/Podcasts/Journals/White papers

Nanosensor Used for Simultaneous Determination of Effective Tea Components January 24th, 2015

New technique helps probe performance of organic solar cell materials January 23rd, 2015

Iranian Scientists Produce Graphene-Based Oxygen Sensor January 23rd, 2015

Silver nanowires demonstrate unexpected self-healing mechanism: The material has potential for flexible electronics January 23rd, 2015

Food/Agriculture/Supplements

Nanosensor Used for Simultaneous Determination of Effective Tea Components January 24th, 2015

Transparent artificial nacre: A brick wall at the nanoscale January 22nd, 2015

Anti-microbial coatings with a long-term effect for surfaces presentation at nano tech 2015 in Japan January 21st, 2015

Nanotechnology Used to Produce Ceramic Membrane with High Thermal Stability January 19th, 2015

NanoNews-Digest
The latest news from around the world, FREE



  Premium Products
NanoNews-Custom
Only the news you want to read!
 Learn More
NanoTech-Transfer
University Technology Transfer & Patents
 Learn More
NanoStrategies
Full-service, expert consulting
 Learn More










ASP
Nanotechnology Now Featured Books




NNN

The Hunger Project







© Copyright 1999-2015 7th Wave, Inc. All Rights Reserved PRIVACY POLICY :: CONTACT US :: STATS :: SITE MAP :: ADVERTISE