and loss factor of peanuts as a function of frequency with moisture contents of 10% w.b. and 30% w.b. at temperatures range from 25 to 85 C. Both the dielectric constant and loss factor were significantly influenced by frequency. The dielectric constant decreased monotonically with increasing frequency at the given temperatures. The decrease of dielectric constant was more pronounced at lower frequencies, especially at higher
temperatures. For example, when the frequency increased from 10 to 300 MHz, the dielectric constant of peanut samples
with 30% w.b. moisture content decreased from 34.94 to 17.25 at 25 C, and from 55.19 to 22.31 at 85 C (Fig. 2b). However, it decreased less at high frequencies than at low frequencies for each temperature. Moreover, the effect of
frequency on dielectric constant was greater at higher moisture contents. For example, when the frequency increased
from 10 to 300 MHz at 45 C, the dielectric constant decreased by 1.68 at 10% w.b. and by 20.13 at 30% w.b. moisture content (Fig. 2b)