Organic Processing Vo1.5 #4

tive test methods, swab tests and lateral flow strips (dipsticks). The quantitative methods have limits of sensitivity in the low ppm range, usually 1 to 2. 5 ppm while the swab tests and lateral flow strips are qualitative tests that are positive or negative at 5 ppm. Swab tests and lateral flow strips are often used to assess the cleanliness of shared equipment after sanitation because results can be read within a few minutes.

Many food companies are not set up to conduct quantitative ELISAs because such testing requires some specialized analytical equipment. Laboratories can provide confidential analytical services for companies assessing ingredients or the effectiveness of their allergen control programs. Laboratories may also have access to other specialized ELISAs that are not available as commercial kits—walnut, pecan and cashew are examples.

Closing thoughts. The “free-from” market is dynamic and may seem attractive, however, great care is needed to assure that such claims are indeed true and that they will be true 100 percent of the time. When and if mistakes are made, consumers with true food

“A“Attention to detail in sourcing, storage and
manufacturing, along with reliable testing,
will prevent problems.”

allergies will likely suffer immediate adverse reactions and be able to pinpoint the cause of their symptoms. Attention to detail in sourcing, storage and manufacturing, along with reliable testing, will prevent problems and open up a whole new market for product devel- _{opment to meet the needs of the}“_free-from” _consumer.

Steve L. Taylor, Ph.D., is the director of the Food Allergy Research & Resource Program (FARRP)( www.farrp.org), in the Dept. of Food Science & Technology at the University of Nebraska. FARRP provides allergen research and testing services, as well as consulting, training and information services. Questions can be emailed to farrp@unl.edu.