Table 3.

Parameter Variation overview (Δ & ∇ for parameter increases and decreases, respectively).

Fruit/Vegetable	Frequency			Temperature			Storage Time			Conclusions
	ε′	ε″	Others	ε′	ε″	Others	ε′	ε″	Others
Apple	∇		Impedance ∇ Reactance ∇				No pattern	No pattern	Conductance Δ Firmness Δ pH Δ	Linear decrease with frequency
Avocado				At low freq. Δ At high freq. ∇	At low freq. Δ					Inflection point at Critical edge freq. 100 MHz
Carrot	∇	∇								Inflection point at Critical edge freq. 100 MHz
Coconut	∇									Linear decrease with frequency
Eggplant	∇									Linear decrease with frequency
Grape			Conductance Δ Capacitance Δ Impedance ∇					Δ	Equ. Capacitance ∇ Equ. Parallel capacitance Δ conductance Δ	Linear increase with storage time
Guava	∇		Energy storage capability ∇	Relative permittivity Δ	Relative permittivity Δ					Linear decrease with frequency
Mango	∇	∇	Dp ∇	∇	Δ	Dp ∇	∇	∇		Linear decrease with frequency
Melon										Frequency linear relationship between 10 and 500 MHz
Orange				At low freq.Δ	At low freq.Δ	Dispersion shift to higher freq.				Temperature linear increase below 50 MHz
Peach	∇ & Std. < 2%	V type & Std. < 10%	Dp Δ High correlation of:LR & freq. and LR & fruit firmness		linear ∇					Frequency and temperature linear decrease
Potato	∇	∇		From −20 °C to 0 °C Δ From 0 °C to 100 °C ∇	From −20 °C to 0 °C Δ From 0 °C to 100 °C Δ then ∇					Frequency linear decrease, varying temperature pattern
Tomato	Exponential ∇	∇			∇ then Δ at 915 MHz					Exponential relationship with frequency