Salmonella Detection

Simple Colorimetric Sensor Rapidly Detects Food Contamination Using a Nucleic Acid Probe

19-Apr-2023 - A team of researchers have developed an easy-to-use colorimetric assay for the detection of food contaminated with salmonella. The assay is based on a novel nucleic acid probe that is cleaved by an RNase enzyme specific to the salmonella species. As the team report in the journal Angewandte ...

Researchers engineer cells to destroy malignant tumor cells but leave the rest alone

30-Jun-2021 - Researchers at McMaster University have developed a promising new cancer immunotherapy that uses cancer-killing cells genetically engineered outside the body to find and destroy malignant tumors. The modified "natural killer" cells can differentiate between cancer cells and healthy cells that are ...

Researchers harness DNA as the engine of super-efficient nanomachine

08-Jul-2016 - Researchers at McMaster University have established a way to harness DNA as the engine of a microscopic "machine" they can turn on to detect trace amounts of substances that range from viruses and bacteria to cocaine and metals. "It's a completely new platform that can be adapted to many kinds of ...

Tracking of individual catalyst nanoparticles during heating

22-Dec-2015 - Researchers from McMaster University in Hamilton, Ont., have taken atomic-level images of individual nanoparticles during heating that could lead to improved fuel-cell technologies at lower cost, reduce dependence on imported oil and minimize greenhouse gas emissions. Heating nanoparticles and ...

A safe route to a needle-free diabetes sensor

11-Jun-2013 - Research reports a new metal oxide semi-conductor (MOS)-based breath test for diabetes that can be produced safely and at a low cost, without employing flame spray pyrolysis. Flame spray pyrolysis is the usual method for making MOS-based sensors, but it can involve unsafe processing procedures ...

Scientists capture secret dance of electrons that causes them to change form

08-Jun-2010 - Scientists have captured the first images of electrons that appear to take on extraordinary mass under certain extreme conditions, thus solving a 25-year mystery about how electrons behave in metals. The discovery could help with the design of new materials for high-temperature ...

An inexpensive 'dipstick' test for pesticides in foods

06-Nov-2009 - Scientists in Canada are reporting the development of a fast, inexpensive "dipstick" test to identify small amounts of pesticides that may exist in foods and beverages. Their paper-strip test is more practical than conventional pesticide tests, producing results in minutes rather than hours by ...

Toxin detection as close as an inkjet printer

15-Jul-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 ...

Biotage AB and McMaster University sign two year extension to Molecular Imaging Development Agreement

06-Mar-2008 - Biotage AB and McMaster University sign a two year extension to Molecular Imaging Development Agreement. McMaster University has successfully completed the first year research agreement, with a key journal publication and several technical presentations. "We used the Biotage Initiator Microwave ...

Biotage AB and McMaster University sign joint agreement to develop new chemistry platform

28-Feb-2007 - Biotage AB and McMaster University signed a joint agreement to develop a new chemistry platform to speed the production of molecular imaging and therapy agents. As part of the agreement, Biotage will provide funding and instruments. The McMaster Institute of Applied Radiation Sciences (McIARS) ...