Nanotechnology To Play Important and Prominent Role In Food Safety

Topics Covered


Food Based Health Threats



Dr. Manuel Marquez, a senior scientist at Kraft Foods and the director of the NanoteK Consortium, believes that nanotechnology will play an important and prominent role in food safety.

Food Based Health Threats

A recent deadly outbreak of hepatitis traced to imported green onions, which killed three people and sickened 600 in Pennsylvania, is one of the latest public health scares caused by food-borne pathogens.

Each year such outbreaks affect untold numbers of people and impose incalculable costs in terms of lost productivity and health care expenses. While nanomaterials are expected to alleviate some of these problems by helping keep products fresher longer, the more exciting application of nanotechnology is the development of nanosensors that can be placed in food production and food distribution facilities — and, longer term, in the packaging itself — to detect the presence of everything from E. coli and listeria to Campylobacter and salmonella.


Nanosensors can work through a variety of methods. One variation being developed by researchers at both Purdue and Clemson universities uses nanoparticles, which can either be tailor made to fluoresce different colours or, alternatively, be manufactured out of magnetic materials.

These nanoparticles can then selectively attach themselves to any number of food pathogens. Employees, using handheld sensors employing either infrared light or magnetic materials could then note the presence of even minuscule traces of harmful pathogens. The advantage of such a system is that literally hundreds and potentially thousands of nanoparticles can be placed on a single nanosensor to rapidly, accurately and affordably detect the presence of any number of different bacteria and pathogens.

A second advantage of nanosensors is that given their small size they can gain access into the tiny crevices where the pathogens often hide. Rashid Bashir, a researcher at Purdue and co-founder of BioVitesse, a biosensor company employing nanotechnology, hopes to reduce the time it takes to detect the presence of microbial pathogens from two to seven days down to a few hours and, ultimately, minutes or even seconds.

Source: Advantage Magazine February 2004


For more information on this source please visit Food and Marketing Institute


Tell Us What You Think

Do you have a review, update or anything you would like to add to this article?

Leave your feedback
Your comment type

While we only use edited and approved content for Azthena answers, it may on occasions provide incorrect responses. Please confirm any data provided with the related suppliers or authors. We do not provide medical advice, if you search for medical information you must always consult a medical professional before acting on any information provided.

Your questions, but not your email details will be shared with OpenAI and retained for 30 days in accordance with their privacy principles.

Please do not ask questions that use sensitive or confidential information.

Read the full Terms & Conditions.