Navigation Links
Toxin detection as close as an inkjet printer
Date:8/14/2009

If that office inkjet printer has become just another fixture, it's time to take a fresh look at it. Similar technology may soon be used to develop paper-based biosensors that can detect certain harmful toxins that can cause food poisoning or be used as bioterrorism agents.

In a paper published in the July issue of Analytical Chemistry, John Brennan and his research team at McMaster University, working with the Sentinel Bioactive Paper Network, describe a method for printing a toxin-detecting biosensor on paper using a FujiFilm Dimatix Materials Printer.

The researchers demonstrated the concept on the detection of acetylcholinesterase (AChE) inhibitors such as paraoxon and aflatoxin B1 on paper using a "lateral flow" sensing approach similar to that used in a home pregnancy test strip.

The process involves formulating an ink like the one found in computer printer cartridges but with special additives to make the ink biocompatible. An ink comprised of biocompatible silica nanoparticles is first deposited on paper, followed by a second ink containing the enzyme, and the resulting bio-ink forms a thin film of enzyme that is entrapped in the silica on paper. When the enzyme is exposed to a toxin, reporter molecules in the ink change colour in a manner that is dependent on the concentration of the toxin in the sample.

This simple and cost-effective method of adhering biochemical reagents to paper is expected to bring the concept of bioactive paper a significant step closer to commercialization. The goal for bioactive paper is to provide a rapid, portable, disposable and inexpensive way of detecting harmful substances, including toxins, pathogens and viruses, without the need for sophisticated instrumentation. The research showed that the printed enzyme retains full activity for at least two months when stored properly, suggesting that such sensor strips should have a good shelf life.

Portable bio-sensing papers are expected to be extremely useful in monitoring environmental and food-based toxins, as well as in remote settings in less industrialized countries where simple bioassays are essential for the first stages of detecting disease.

Applications for bioactive paper also include clinical applications in neuroscience, drug assessment, and pharmaceutical development.


'/>"/>

Contact: Gene Nakonechny
genen@mcmaster.ca
905-525-9140 x26781
McMaster University
Source:Eurekalert  

Related biology technology :

1. Spectral announces presentations at the 29TH International Symposium on Intensive Care and Emergency Medicine focusing on the role of endotoxin
2. PharmAthene Presents Data for SparVax(TM) and Valortim(R), a Novel Vaccine and Anti-Toxin for the Prevention and Treatment of Anthrax Infection at the 7th Annual ASM Biodefense Meeting
3. Medarex And PharmAthene Announce New Therapeutic Data for Anthrax Anti-Toxin, Valortim(R)
4. Spectral announces continuing support for the combination of EAA(TM) and anti-endotoxin therapeutics
5. Spectrals EAA(TM) to be used in Phase III study for a sepsis anti-endotoxin therapy
6. New Online Learning Tool Fills the Knowledge Gap on Botulinum Toxin Type B for Cervical Dystonia
7. New designer toxins kill Bt-resistant insect pests
8. Abbott HIV Test Demonstrates Earlier Disease Detection
9. febit First to Offer Newly Published Mouse Genome on a Chip for DNA/RNA Detection and Enrichment
10. EyeIC Receives FDA 510(k) Clearance for MatchedFlicker(TM) Retinal Aid Detection Technology
11. BD and Fujirebio Diagnostics Sign Worldwide Agreement to Develop Biomarker Assays to Improve Cancer Detection and Management
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Toxin detection as close as an inkjet printer
(Date:10/11/2017)... ... October 11, 2017 , ... At its ... announced Dr. Suneel I. Sheikh, the co-founder, CEO and chief research scientist of ... been selected for membership in ARCS Alumni Hall of Fame . ASTER ...
(Date:10/11/2017)... ... October 11, 2017 , ... ComplianceOnline’s Medical Device Summit is ... and 8th June 2018 in San Francisco, CA. The Summit brings together current and ... distinguished CEOs, board directors and government officials from around the world to address key ...
(Date:10/11/2017)... Netherlands and LAGUNA HILLS, Calif. ... Institute of Cancer Research, London (ICR) ... MMprofiler™ with SKY92, SkylineDx,s prognostic tool to risk-stratify patients with ... known as MUK nine . The University of ... which is partly funded by Myeloma UK, and ICR will ...
(Date:10/11/2017)... ... October 11, 2017 , ... ... granted orphan drug designation to SBT-100, its novel anti-STAT3 (Signal Transducer and Activator ... osteosarcoma. SBT-100 is able to cross the cell membrane and bind intracellular STAT3 ...
Breaking Biology Technology:
(Date:5/16/2017)... 2017   Bridge Patient Portal , an ... MD EMR Systems , an electronic medical record ... have established a partnership to build an interface ... GE Centricity™ products, including Centricity Practice Solution (CPS), ... These new integrations will allow healthcare delivery networks ...
(Date:4/17/2017)... , April 17, 2017 NXT-ID, Inc. (NASDAQ: ... announces the filing of its 2016 Annual Report on Form 10-K ... Commission. ... 10-K is available in the Investor Relations section of the Company,s ... the SEC,s website at http://www.sec.gov . 2016 Year ...
(Date:4/11/2017)... 2017 No two people are believed ... New York University Tandon School of Engineering and ... that partial similarities between prints are common enough ... phones and other electronic devices can be more ... lies in the fact that fingerprint-based authentication systems ...
Breaking Biology News(10 mins):