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, 2012The 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:
| Related News Press |
News and information
Simulating magnetization in a Heisenberg quantum spin chain April 5th, 2024
NRL charters Navy’s quantum inertial navigation path to reduce drift April 5th, 2024
Discovery points path to flash-like memory for storing qubits: Rice find could hasten development of nonvolatile quantum memory April 5th, 2024
Chemistry
What heat can tell us about battery chemistry: using the Peltier effect to study lithium-ion cells March 8th, 2024
Nanoscale CL thermometry with lanthanide-doped heavy-metal oxide in TEM March 8th, 2024
Nanotubes/Buckyballs/Fullerenes/Nanorods/Nanostrings
Tests find no free-standing nanotubes released from tire tread wear September 8th, 2023
Detection of bacteria and viruses with fluorescent nanotubes July 21st, 2023
Discoveries
Chemical reactions can scramble quantum information as well as black holes April 5th, 2024
New micromaterial releases nanoparticles that selectively destroy cancer cells April 5th, 2024
Utilizing palladium for addressing contact issues of buried oxide thin film transistors April 5th, 2024
Announcements
NRL charters Navy’s quantum inertial navigation path to reduce drift April 5th, 2024
Discovery points path to flash-like memory for storing qubits: Rice find could hasten development of nonvolatile quantum memory April 5th, 2024
Food/Agriculture/Supplements
Silver nanoparticles: guaranteeing antimicrobial safe-tea November 17th, 2023
Night-time radiative warming using the atmosphere November 17th, 2023
DGIST and New Life Group launched a research project on "Functional beauty and health products using the latest nanotechnology" May 12th, 2023
Nanobiotechnology
New micromaterial releases nanoparticles that selectively destroy cancer cells April 5th, 2024
Good as gold - improving infectious disease testing with gold nanoparticles April 5th, 2024
Researchers develop artificial building blocks of life March 8th, 2024
 |
||
 |
||
| 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 |
||
|
|
||