Kholmanskiy А.С. 1
Tilov А.Z. 2
Sorokin Е.Yu. 3
1 Institute of electrification of agriculture
2 Moscow state university of engineering ecology
3 Institute of petrochemical synthesis of A.V. Topchiyev RAS
In work the physical and chemical model of the mechanism of drying (dehydration) of vegetables and fruit is offered. A vegetative fabric presented system of parallel capillaries and the membranes which diffusive resistance correlated with a hydrophilicity share of a chemical composition of a fabric, having formalized drying process by means of Fick’s law. Using exponential and linear approximations of experimental curves, defined a constant of speed and energy of activation of process of drying of fruit (apple, a pear, grapes, an apricot), vegetables (carrots, a tomato, pepper, garlic, onions, peas, spinach, a pumpkin) and a mushroom. Within the offered model well explained dependence of kinetic parameters of process of drying on a chemical composition of a vegetative fabric, thickness of dried-up samples and external conditions (temperature, pressure, speed and humidity of air). The established physic-chemical mechanisms of drying of vegetative foodstuff can be used when developing industrial technologies of their conservation, including with wind power and sun application.