While extremely sensitive, it is very time-intensive in terms of sample preparation. Meanwhile, the integrated optic interferometric sensor technology upon which the biosensor is based has already been patented by Hartman and the Georgia Tech Research Corporation. It is also the basis for a chemical contaminant sensing system for environmental applications. That system will also undergo field tests in the near future. The interferometric detection patent has been licensed commercially by Photonic Sensor Systems Inc., an Atlanta-based company.
Researchers say commercialization for the biosensor is still some time away.
After the field test at Gold Kist is completed, the research team plans to return to the laboratory to further refine the technology. We want to extend the biosensor s capabilities to detect other pathogens, and we will need to optimize the chemistry for that, says Hartman. Also, we would like to use the biosensor to address other food safety issues, such as those associated with chemical contamination threats. In addition to its application in the poultry and beef industries, Edmonds believes there is a need for the biosensor in the seafood industry. That industry contends with a variety of waterborne pathogens, particularly in shellfish.