Iowa Public Television

 

It's not the size that counts...

posted on March 28, 2003


Tuning out harmful bacteria…

Researchers have found high intensity radio waves can kill bacteria. The radio frequency electrical fields technique, or R-F-E-F, has been studied as a pasteurization method since the 1950s. The latest research suggests R-F-E-F may be capable of cold pasteurization.

The tests showed apple juice blasted with high-intensity, low-frequency radio waves eliminated 99.9 percent of a non-dangerous strain of e.coli known as K12. Because e. coli o157:H7 is from the same family, it is hoped this lethal cousin will respond accordingly.

R-F-E-F may also have application as a cold pasteurization method for other heat-sensitive foods such as liquid egg products.


Tags: bacteria food news radio safety