Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Biodegradable 'napkin' could help quickly detect, identify biohazards

12.09.2006
Detecting bacteria, viruses and other dangerous substances could soon be as simple as wiping a napkin or paper towel across a table, according to Cornell University researchers.

Once fully developed, the new absorbent wipe, embedded with nanofibers containing antibodies to numerous biohazards, could be used by virtually anyone to rapidly uncover pathogens in meat packing plants, hospitals, cruise ships, airplanes and other commonly contaminated areas, the researchers say.

The materials for this new process, which is still being tested in the laboratory, were described today at the 232nd national meeting of the American Chemical Society, the world's largest scientific society.

"It's very inexpensive, it wouldn't require that someone be highly trained to use it, and it can be activated for whatever you want to find," said Margaret Frey, Ph.D., Lois and Mel Tukman assistant professor of textiles and apparel at Cornell. "So if you're working in a meat packing plant, for instance, you could swipe it across some hamburger and quickly and easily detect E. coli bacteria." If biohazards were detected, she added, the area could be scoured and re-tested to confirm the contaminants were destroyed.

... more about:
»Pathogen »biohazard »fabric »nanofibers

In their experiments, Frey and her colleagues formed nanofibers with diameters between 100 nanometers and 2 microns (a human hair is about 80,000 nanometers wide). On these nanofibers, the researchers created platforms made of biotin, a B-vitamin and the protein streptavidin to hold the antibodies. The nanofibers, which are made of polyactide (PLA) - a polymer compound made from corn - can be used to make non-woven wipers or swabs. To reduce costs, the nanofibers also could be incorporated into conventional paper products.

"The fabric basically acts as a sponge that you can use to dip in a liquid or wipe across a surface," Frey said. "As you do that, antibodies in the fabric are going to selectively latch onto whatever pathogen that they match. Using this method we should, in theory, be able to quickly activate the fabric to detect whatever is the hazard of the week, whether it is bird flu, mad cow disease or anthrax."

For now, identifying the collected pathogens requires a separate analytical step. But Frey and colleagues are working on methods, such as color changes in the fabric, which would instantly identify the contaminant.

"We're probably still a few years away from having this ready for the real world," Frey said, "but I really believe there is a place for this type of product that can be used by people with limited training to provide a fast indication of whether a biohazard is present."

Michael Bernstein | EurekAlert!
Further information:
http://www.acs.org

Further reports about: Pathogen biohazard fabric nanofibers

More articles from Life Sciences:

nachricht The irresistible fragrance of dying vinegar flies
16.08.2017 | Max-Planck-Institut für chemische Ökologie

nachricht How protein islands form
15.08.2017 | Albert-Ludwigs-Universität Freiburg im Breisgau

All articles from Life Sciences >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Exotic quantum states made from light: Physicists create optical “wells” for a super-photon

Physicists at the University of Bonn have managed to create optical hollows and more complex patterns into which the light of a Bose-Einstein condensate flows. The creation of such highly low-loss structures for light is a prerequisite for complex light circuits, such as for quantum information processing for a new generation of computers. The researchers are now presenting their results in the journal Nature Photonics.

Light particles (photons) occur as tiny, indivisible portions. Many thousands of these light portions can be merged to form a single super-photon if they are...

Im Focus: Circular RNA linked to brain function

For the first time, scientists have shown that circular RNA is linked to brain function. When a RNA molecule called Cdr1as was deleted from the genome of mice, the animals had problems filtering out unnecessary information – like patients suffering from neuropsychiatric disorders.

While hundreds of circular RNAs (circRNAs) are abundant in mammalian brains, one big question has remained unanswered: What are they actually good for? In the...

Im Focus: RAVAN CubeSat measures Earth's outgoing energy

An experimental small satellite has successfully collected and delivered data on a key measurement for predicting changes in Earth's climate.

The Radiometer Assessment using Vertically Aligned Nanotubes (RAVAN) CubeSat was launched into low-Earth orbit on Nov. 11, 2016, in order to test new...

Im Focus: Scientists shine new light on the “other high temperature superconductor”

A study led by scientists of the Max Planck Institute for the Structure and Dynamics of Matter (MPSD) at the Center for Free-Electron Laser Science in Hamburg presents evidence of the coexistence of superconductivity and “charge-density-waves” in compounds of the poorly-studied family of bismuthates. This observation opens up new perspectives for a deeper understanding of the phenomenon of high-temperature superconductivity, a topic which is at the core of condensed matter research since more than 30 years. The paper by Nicoletti et al has been published in the PNAS.

Since the beginning of the 20th century, superconductivity had been observed in some metals at temperatures only a few degrees above the absolute zero (minus...

Im Focus: Scientists improve forecast of increasing hazard on Ecuadorian volcano

Researchers from the University of Miami (UM) Rosenstiel School of Marine and Atmospheric Science, the Italian Space Agency (ASI), and the Instituto Geofisico--Escuela Politecnica Nacional (IGEPN) of Ecuador, showed an increasing volcanic danger on Cotopaxi in Ecuador using a powerful technique known as Interferometric Synthetic Aperture Radar (InSAR).

The Andes region in which Cotopaxi volcano is located is known to contain some of the world's most serious volcanic hazard. A mid- to large-size eruption has...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Call for Papers – ICNFT 2018, 5th International Conference on New Forming Technology

16.08.2017 | Event News

Sustainability is the business model of tomorrow

04.08.2017 | Event News

Clash of Realities 2017: Registration now open. International Conference at TH Köln

26.07.2017 | Event News

 
Latest News

New thruster design increases efficiency for future spaceflight

16.08.2017 | Physics and Astronomy

Transporting spin: A graphene and boron nitride heterostructure creates large spin signals

16.08.2017 | Materials Sciences

A new method for the 3-D printing of living tissues

16.08.2017 | Interdisciplinary Research

VideoLinks
B2B-VideoLinks
More VideoLinks >>>