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Part of the energy dissipated as heat, which in turn affects the rate of subsequent
processes.
It is known that in the first stage ozone interaction with a suspension, it
dissolves in its aqueous phase, causing ozonolysis of water. The result is the
formation of -OH hydroxyl radical and the hydrogen liberated proton contributes
to changing the surface electric charge, which creates conditions for binding of
additional proton. This causes compression of the membrane material, resulting
in an intracellular pressure gradient which "pushes" the moisture evaporation
and without raising the temperature.
In the process of drying the plant material in the ozone - air under a
microscope clearly visible transparent stains accumulating intracellular water
and reduced cell circuits. Prominent damage caused by changes in membrane
permeability, are not sustainable and are restored in a few hours. The complex
interaction of ozone with a dried plant material in it decreases energy level
relations moisture contributes to the intensification of heat and mass transfer. It
was found that the acceleration of mass transfer processes is due to the
increasing water yielding of the material on the basis of physico - chemical,
biochemical processes and increase the MAS drying agent.
Drying in ozone - air prevents the development of microflora in the freshly
harvested fruits and vegetables. The effectiveness of ozone effects on
biochemical processes, phyto pathogens, agronomic performance of seed, etc.
The properties depends on the technological mode of operation, type of product.
When ozone concentrations of 10 mg / m3, higher respiration rate decreases
since the beginning of exposure, thereby preventing the process self-warming
with all its positive effects: increased safety of dry weight, there comes a deeper
state of rest during storage.
Application of ozone - air mixture as the drying agent affects the surface
microflora not only by reducing the humidity, but also by ozone disinfecting
action, which depends on its concentration and temperature drying mode. Saving
and even improve the quality parameters is made possible by using ozonated
drying agent concentration of 8 - 10 mg / m3. The number of phyto pathogenic
decreases 2.2 times compared to the heat. Marked decrease in the number of
bacteria and fungi, depending on the source of contamination and ozone. At
concentrations of 10 mg / m3 molds begin to disappear from the beginning of
drying.
It should be noted that ozone is virtually plant material necrotic changes.
Coverslips damaged tissue and cell membranes tend to recover in 3 - 18 hours
after the end of treatment. At a concentration of 40 mg O3 / m3 processed
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