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
Quantum computer improves AI predictions April 17th, 2026
Flexible sensor gains sensitivity under pressure April 17th, 2026
A reusable chip for particulate matter sensing April 17th, 2026
Detecting vibrational quantum beating in the predissociation dynamics of SF6 using time-resolved photoelectron spectroscopy April 17th, 2026
Chemistry
Projecting light to dispense liquids: A new route to ultra-precise microdroplets January 30th, 2026
From sensors to smart systems: the rise of AI-driven photonic noses January 30th, 2026
"Nanoreactor" cage uses visible light for catalytic and ultra-selective cross-cycloadditions October 3rd, 2025
Cambridge chemists discover simple way to build bigger molecules – one carbon at a time June 6th, 2025
Nanotubes/Buckyballs/Fullerenes/Nanorods/Nanostrings/Nanosheets
Tiny nanosheets, big leap: A new sensor detects ethanol at ultra-low levels January 30th, 2026
Enhancing power factor of p- and n-type single-walled carbon nanotubes April 25th, 2025
Chainmail-like material could be the future of armor: First 2D mechanically interlocked polymer exhibits exceptional flexibility and strength January 17th, 2025
Innovative biomimetic superhydrophobic coating combines repair and buffering properties for superior anti-erosion December 13th, 2024
Discoveries
Quantum computer improves AI predictions April 17th, 2026
Flexible sensor gains sensitivity under pressure April 17th, 2026
A reusable chip for particulate matter sensing April 17th, 2026
Detecting vibrational quantum beating in the predissociation dynamics of SF6 using time-resolved photoelectron spectroscopy April 17th, 2026
Announcements
A fundamentally new therapeutic approach to cystic fibrosis: Nanobody repairs cellular defect April 17th, 2026
UC Irvine physicists discover method to reverse ‘quantum scrambling’ : The work addresses the problem of information loss in quantum computing system April 17th, 2026
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
Nanobiotechnology
A fundamentally new therapeutic approach to cystic fibrosis: Nanobody repairs cellular defect April 17th, 2026
New molecular technology targets tumors and simultaneously silences two ‘undruggable’ cancer genes August 8th, 2025
New imaging approach transforms study of bacterial biofilms August 8th, 2025
Electrifying results shed light on graphene foam as a potential material for lab grown cartilage June 6th, 2025
 |
||
 |
||
| 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 |
||
|
|
||