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
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