Nano sensors offer rapid detection of Salmonella, claims ARS
By Jane Byrne, 06-Jan-2009
Source of Article: http://www.foodproductiondaily.com/Quality-Safety/Nano-sensors-offer-rapid-detection-of-Salmonella-claims-ARS
A nano sensor to detect Salmonella bacteria has been developed which could enhance food safety and security, claims a team of scientists.
Detection of this food contaminant is critical to control food safety, and while different methods have been employed to detect Salmonella, the biggest challenges in the various approaches have been speed and sensitivity.
According to the US
Department of Agriculture’s Research Service (ARS), collaboration between its
engineers at the Quality and Safety Assessment Research unit and scientists
Nanoscale sensors have been emerging as a feature of recent nanotechnology applications for food safety and quality measurement.
Salmonella is one of the most
common enteric (intestinal) infections in the
The ARS team of collaborators claims the sensor could be adapted to detect other foodborne pathogens as well.
There are examples of biosensors in nature, continued the researchers, such as insects that detect tiny amounts of sex pheromones in the environment and use them as a beacon to find mates and fish that use natural biosensors to detect barely perceptible vibrations in the surrounding water.
uses tiny particles measuring one billionth of a metre, is already used for
various applications in areas such as food supplements, functional food
ingredients and in food packaging.
Estimates of the future market for nanotechnology range from €750bn to €2,000bn by 2015 according to the European Commission, with predictions for the number of new jobs created by the industry standing at around 10 million.
However, the technology has suffered from a lack of public understanding and consumer concerns over the safety of some of its applications.
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