Nanotechnology Now

Our NanoNews Digest Sponsors

Heifer International

Wikipedia Affiliate Button

Home > Press > Ultra Sensitive Nano Biosensors for Detection of Ethanol

Abstract:
A team of Iranian researchers from the University of Kurdistan (UOK), led by Dr. Abdollah Salimi, developed a glassy carbon (GC) electrode modified with a nanocomposite comprised of multi-walled carbon nanotubes which enables low concentration detection of ethanol in different environments.

Ultra Sensitive Nano Biosensors for Detection of Ethanol

Tehran, Iran | Posted on August 5th, 2012

The fermentation of food products usually leads to the liberation of minute amounts of ethanol. Thus, the detection of ethanol at low levels provides a practical means for identification of food spoilage caused by food-borne pathogenic bacteria. In addition, ethanol, at low concentrations, appears as an ingredient in the composition of many pharmaceutical drugs and hence its precise measurement can serve as a criterion for quality analysis of these products.

By preparing a platform to immobilize the electrogenerated NAD+ oxidation products (Ox-P(NAD+)) occurring at potentials as high as 1.2 V, the UOK researchers have obtained a quinone-diimine species which plays an influential role as an intermediate in the electrocatalytic oxidation of NADH. Finally, the members of the mentioned research group have appraised the ethanol sensing performance of their proposed biosensor by taking alcohol dehydrogenase (ADH) as a model enzyme.

"The utilization of a nanocomposite constituting multi-walled carbon nanotubes and an ionic liquid furnishes a desirable platform for immobilization of the NAD+ oxidation products and allows the realization of a highly sensitive electrocatalytic system with a considerably lowered overpotential of the NADH oxidation process." Dr. Salimi stated, highlighting the innovative features of their experimental work.

Furthermore, the inclusion of the carbon nanotubes improves the mechanical stability of the system and accelerates the electron-transfer processes at the electrode surface thanks to the unique electronic properties of the CNTs.

Moreover, the MWCNTs/ionic liquid nanocomposite as the platform for immobilization of the electron-transfer mediators (i.e. NAD+ oxidation products) minimizes the superficial contaminations due to its anti-fouling property and as a result, the operational and storage stability of the system is enhanced.

For an elaborate technical report discussing the details of this research work please consult Talanta (The International Journal of Pure and Applied Analytical Chemistry).

####

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

Shape matters when light meets atom: Mapping the interaction of a single atom with a single photon may inform design of quantum devices December 4th, 2016

UTSA study describes new minimally invasive device to treat cancer and other illnesses: Medicine diffusion capsule could locally treat multiple ailments and diseases over several weeks December 3rd, 2016

Novel Electrode Structure Provides New Promise for Lithium-Sulfur Batteries December 3rd, 2016

Research Study: MetaSOLTM Shatters Solar Panel Efficiency Forecasts with Innovative New Coating: Coating Provides 1.2 Percent Absolute Enhancement to Triple Junction Solar Cells December 2nd, 2016

Chemistry

Deep insights from surface reactions: Researchers use Stampede supercomputer to study new chemical sensing methods, desalination and bacterial energy production December 2nd, 2016

Scientists shrink electron gun to matchbox size: Terahertz technology has the potential to enable new applications November 25th, 2016

Tip-assisted chemistry enables chemical reactions at femtoliter scale November 16th, 2016

New Book by Nobel Laureate Tells Story of Chemistry’s New Field: Fraser Stoddart explains the mechanical bond and where it is taking scientists November 11th, 2016

Nanotubes/Buckyballs/Fullerenes

Novel Electrode Structure Provides New Promise for Lithium-Sulfur Batteries December 3rd, 2016

Cutting-edge nanotechnologies are breaking into industries November 18th, 2016

Hybrid nanostructures hold hydrogen well: Rice University scientists say boron nitride-graphene hybrid may be right for next-gen green cars October 25th, 2016

Self-healable battery Lithium ion battery for electronic textiles grows back together after breaking October 20th, 2016

Discoveries

Shape matters when light meets atom: Mapping the interaction of a single atom with a single photon may inform design of quantum devices December 4th, 2016

UTSA study describes new minimally invasive device to treat cancer and other illnesses: Medicine diffusion capsule could locally treat multiple ailments and diseases over several weeks December 3rd, 2016

Novel Electrode Structure Provides New Promise for Lithium-Sulfur Batteries December 3rd, 2016

Research Study: MetaSOLTM Shatters Solar Panel Efficiency Forecasts with Innovative New Coating: Coating Provides 1.2 Percent Absolute Enhancement to Triple Junction Solar Cells December 2nd, 2016

Announcements

Shape matters when light meets atom: Mapping the interaction of a single atom with a single photon may inform design of quantum devices December 4th, 2016

UTSA study describes new minimally invasive device to treat cancer and other illnesses: Medicine diffusion capsule could locally treat multiple ailments and diseases over several weeks December 3rd, 2016

Novel Electrode Structure Provides New Promise for Lithium-Sulfur Batteries December 3rd, 2016

Research Study: MetaSOLTM Shatters Solar Panel Efficiency Forecasts with Innovative New Coating: Coating Provides 1.2 Percent Absolute Enhancement to Triple Junction Solar Cells December 2nd, 2016

Food/Agriculture/Supplements

News from Quorum: The Agricultural Research Service of the USDA uses a Quorum Cryo-SEM preparation system for the study of mites, ticks and other soft bodied organisms November 22nd, 2016

Water, water -- the two types of liquid water: Understanding water's behavior could help with Alzheimer's research November 11th, 2016

How nanoscience will improve our health and lives in the coming years: Targeted medicine deliveries and increased energy efficiency are just two of many ways October 26th, 2016

New Agricultural Research Center Debuts at UCF October 12th, 2016

Nanobiotechnology

Deep insights from surface reactions: Researchers use Stampede supercomputer to study new chemical sensing methods, desalination and bacterial energy production December 2nd, 2016

Nanobiotix Provides Update on Global Development of Lead Product NBTXR3: Seven clinical trials across the world: More than 2/3 of STS patients recruited in the “act.in.sarc” Phase II/III trial: Phase I/II prostate cancer trial now recruiting in the U.S. November 28th, 2016

From champagne bubbles, dance parties and disease to new nanomaterials: Understanding nucleation of protein filaments might help with Alzheimer's Disease and type 2 Diabetes November 24th, 2016

Making spintronic neurons sing in unison November 18th, 2016

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