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Drying is one of the most frequently used methods for food preservation due to prevention of microorganisms’ growth and
reduction of moisture-mediated deteriorative reactions at low water activity. In addition, food drying provides numerous
benefits, such as formation of desirable texture and physical properties, extending shelf life, and minimizing
packaging, storage, and transportation costs.
From the traditional to the most innovative, there are several drying solutions for the industrial process. Depending on the needs, the processing time, the product final quality or the efficiency of the process can vary considerably.
Drying is an essential material processing procedure. It can be technically defined as the vaporization of absorbed moisture from wet materials. It is a simultaneous heat and mass transfer process that may be accomplished by several mechanisms. Heat is transferred to the material, which causes the absorbed water to vaporize. The evaporated water is then transferred to and carried by the surrounding air or inert gas. The humidity or moisture content of the surrounding air increases after the process. The total weight of the material decreases after the process, and the moisture-free weight is constant throughout. Drying is carried out due to one (or more) of the following reasons:
To prevent the growth of bacteria, molds, and other microbes on food and pharmaceutical products
To keep materials from rusting and corrosion
To improve or maintain the desirable properties of a material
To make materials suitable for further processing, storage, handling, and transportation
To enhance functionality, usability, and value of the product
Dryers are widely used in food, pharmaceutical, agricultural, sugar, pulp and paper, textiles, wood, metallurgical, metal fabrication, and automotive industries, just to name a few.
There is a lot of different drying methods. The most common are sun drying, hot air drying, contact drying, infrared drying, freeze-drying, fluidized bed drying, and dielectric drying.
Continuous Type Dryer
Vacuum Tray Dryer
Heat Pump Dryer
Electrical Hot Air Dryer
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