This can be attributed to the dielectric property of the product, which describes how materials interact with electromagnetic radiation .
Biological materials act as lossy insulators in terms of their ability to store and to dissipate electrical energy from an applied electromagnetic field.
These properties vary with the composition of a substance, and with the temperature and frequency.
Since most food products have significantly high water contents, their dielectric properties are important in understanding their behavior when they are exposed to electromagnetic fields in any process involving radio frequency .
without conduction; an insulator.