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Sunflower seeds microwave roaster machine--nut microwave roasting equipment
The principle of microwave sterilizing
Mircowave sterilizing is the result of combined action of the thermal effect of eletromgnetic fields and the biological effect.Thermal effect of microwave on the bacteria denatures the protein of bacteria ,and make the bacteria lost the condition of nutrition,reproduction and survival so as to die .The biological effects of microwave on the bacteria is that the microwave electric field changes the potential distribution of cross-section of the bacterial cell membrane and impacts the concentration of electron and lon around the membrane ,and changes the permeability of cell membranes ,therefore the bacterium become innutrient and lost normal metabolism.The structure and function of bacterium fall into disorder ,and theirs growth are inhibited ,as a result they are dead.Moreover ,nucleic acid genetic(RNA) and deoxyribose acid (DNA),which decide the normal growth and stability of bacterial,are curly-shaped macromolecule made of a number of linked compactly hydrongen bond .The microwave can be strong enough to make hydrogen bond stack ,rupture and recombine ,and induce intragenic mutation or chromosome aberration and even rupure
The principle of microwave heating:
Microwave is a sort of electromagnetic wave which frequency is 300MHz to 300GHz .The water molecule in medium materials is polar molecule,under the effect of the rapid change of electromagnetic field,its polarity orientation will alter with the changes of the external electric field with the high-speed,causing the movement and friction of molecule.so that the microwave field energy can be converted to heat energy in mudium to rise the temperature of materials.accomplishing heating ,puffing and a series of physical and chemical processes ,and so ,mircrowave heating is achieved.
Main features of microwave drying & Sterilization equipment
1. Rapid drying
Microwave heating does not need the progress of heat conduction, wich make the material itself become a heating unit.
2. Symmetrical heating
Because of no restrictions on the shape of the material, the materials is heated even, and theres is no adjust outside or unheated inside.
3. Energy saving and efficient
The microwave drying can save one third energy of the far-infrared drying
4. Mildew proo f ing/sterilizing/keeping fresh
Microwave drying with thermal and biological effects can sterilize and resist rot under lower temperature.
5. Advanced craftwork and easy control
With the use of graphic operation terminal and PlC, you can realize programmable auto - control of heating progress.
6. Safety and innocuity.
There is no harmful radioactivity or harmful gas, or waste heat or dust pollution, so neither could microwave heating contaminate food nor pollute the
environ ment.
Please to feel free to talk with me to know more details about our microwave equipment, and we also can design the microwave equipment according your requirement, so just tell us your requirement.