The ratio between 10−7 H/m) (Regier and Schubert 2005) and to real and imaginary parts of permittivity rep- consider only the complex permittivity (εr) as resents another important parameter, the loss the dielectric property that describes the tangent (Eq. 25.3, which represents a measure behavior of the food when it is subjected to of the food ability to the energy dissipation an electromagnetic field (Metaxas and (Ponne and Bartels 1995; Içier and Baysal Meredith 1993; Nelson and Datta 2001). 2004). Complex permittivity is defined by the next ε ′′ 1 equation: tan δ = =D= (25.3) ε′ Q ε r = ε ′ − j ⋅ ε ′′ (25.1) In Equation 25
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