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Home Blog What are microwave drying and its use in the food industry?

What are microwave drying and its use in the food industry?

2023-07-17 16:08:21
Microwave Drying is a drying method that uses electromagnetic waves as the heating source and the dried material itself as the heating body to make the internal moisture of the material evaporate and get the drying effect.

Microwave Drying has become more and more important in various fields of drying because of its automatic mode, ease to control and high efficiency, uniform drying, etc. Since the 1960s, foreign countries have done research on Microwave Drying Technique.

At present, China's Microwave Drying Technology has been developed enough to mature and gradually applied in various industries, so how does Microwave Drying work in the end? What is the principle of operation?

What is microwave drying, and what use does it give to the food industry?

Microwave Drying is a drying method that uses electromagnetic waves as the heating source and the dried material itself as the heating body to make the internal moisture of the material evaporate and get the drying effect. Microwave Drying Equipment has fewer supporting facilities, occupies less land, is easy to operate, can be operated continuously, and is convenient for automatic production and enterprise management.

Microwave Drying makes the heated object itself become the heat source, and dries from inside to outside, overcoming the problem of forming hard shells and crusts in conventional drying due to the outer layer of the material drying first, Microwave Dryer heats up quickly and evenly, significantly improving the heat transfer efficiency and drying rate, and can better retain the original properties of the material.

Advantages of Microwave Drying.

1Microwave Drying Process, temperature gradient, heat transfer, and vapor pressure migration direction are consistent, thus significantly improving the moisture migration conditions in the drying process, which is more outstanding than conventional drying.
2Due to the existence of pressure migration power, Low-Temperature Drying has the characteristic of drying from inside to outside. The inner layer of the material is dried first, which overcomes the characteristic of forming a hard shell of crust in conventional drying. The outer layer of the material is dried first and prevents the internal moisture from moving out.
3Compared with traditional drying methods such as hot air, steam, and electric heating, the speed of Microwave Drying Equipment can be increased by more than several times, significantly improving production efficiency; the energy consumption of Microwave Dryer Machine is reduced by more than 50%.
4When using Microwave Dry, regardless of the shape of the material, the heat can penetrate evenly and produce a puffing effect, which is conducive to crushing.
5Microwave Drying Technology can maintain the color, aroma, taste, and tissue structure of the dried material and not decompose and destroy the active ingredients.
6Microwave Drying Process has a high energy utilization rate. The microwave heat is generated directly inside the wet material, less heat loss, high thermal efficiency, no environmental and noise pollution.

Tea Drying is a more critical process in the initial processing of tea, mainly through heat evaporation of tea moisture, to form the unique sensory quality and stable quality characteristics of tea.

Detail of Rose Petal Microwave Flower Drying Machine In Manufacturer

Tea Microwave Dryer mainly uses rapid temperature rise to blunt the active oxidation enzymes of fresh leaves, inhibit the accelerated oxidation of tea polyphenols and other enzymes in fresh leaves, prevent profound color changes in the subsequent drying process, and at the same time volatilize the fishy herbal taste of fresh leaves, so that the tea fragrance can be better formed. The function of the Tea Microwave Drying Machine is to dry tea leaves, kill tea leaves and sterilize tea leaves.

The purpose of Microwave Drying Of Tea is to use high temperatures to stop the enzyme activity; further, evaporate the water so that the water content of tea leaves is controlled within 13%; further improving the quality and color of tea leaves.

A tea Drying Machine is a microwave drying machine. This microwave generator radiates electromagnetic waves to the tea leaves. It penetrates the interior, inducing the water and other polar molecules of the tea leaves to rotate simultaneously, rotating billions of times per second. The internal temperature is higher than the surface temperature of the material, making the enzyme lose its vitality, and some water molecules evaporate to kill and dry.

Tea Microwave Drying Equipment has the advantages of short processing time, high efficiency of greening and drying, retaining the original nutrients and flavor such as color, aroma, taste, and shape, improving the quality of tea, automatic control of production process, energy-saving, uniform sterilization, and easy control and simple operation.

In addition, Microwave Technology in pharmaceutical drying and sterilization is developing rapidly, but also due to Microwave Vacuum, Microwave Vacuum Freezing Sublimation Technology breakthroughs, and to promote the development of Microwave in the pharmaceutical processing industry.

Pharmaceutical Microwave Drying is actually through induction heating and medium heating. The moisture and fat in Chinese herbal medicines to varying degrees absorb microwave energy and transform it into heat to achieve the purpose of drying.

Microwave Drying Technology For Medicine can kill microorganisms and mold, have the effect of disinfection so that the herbs meet the health standards, and prevent the herbs in the storage process of mold and insects. The Microwave Heating Equipment produced in China has two frequencies: 915mhz and 2450mhz.

The above is the introduction of the Microwave Dryer Machine and the basic information of the Microwave Drying Technology Application. From this, we can know that Microwave Drying Technology is widely used at present, which can keep more nutrients from the original product and improve the quality of the product.

2021 Microwave Drying Machine Customer Case:

2021 Industrial Microwave Vacuum Dryer customer case
1Sale of 700-800kg/h Microwave Vacuum Oven in India
2Japan 600kg/h Microwave Dryer Machine for sale
3Vietnam sale of 2t/h high-quality Vacuum Drying Equipment
4Italy sale 600-700kg/h professional Microwave Wood Drying Machine
2021 Customer Repurchase Case of Industrial Microwave Systems
1Sale of 800kg/h Industrial Drying Machines in the USA
2Sale of 700kg/h Industrial Microwave Dryer in Russia
3Sale of 800kg/h cost-effective Microwave Vacuum Dryer Machine in Thailand
41t/h Dryer For Food Products sold in Indonesia

Our company has matured Microwave Dryer Production technology, and we have worked intensively with engineers who have many years of experience in Drying Machine Manufacturing. We are now selling Industrial Microwave Vacuum Dryer all over the world. If you have any questions about Microwave Vacuum Drying Equipment, please feel free to contact us, and we look forward to working with you.

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