Chinese medicinal materials sterilization why use Microwave Equipment?

Traditional Chinese medicinal materials refer to the famous and excellent genuine medicinal materials with Chinese characteristics that are traditionally recognized by people and come from specific production areas. In recent years, Chinese herbal medicine is also an important export commodity to earn foreign exchange.

The quality of Chinese medicinal materials depends on the drying and sterilization, so drying and sterilization is an essential factor affecting the quality of Chinese medicinal materials.

The Chinese herbs microwave decocting machine is more natural drying. For its own, natural drying cannot be sterilized, secondly killing the bacteria of Chinese medicinal materials is very important. So in the selection of Chinese medicinal materials drying and sterilizing equipment, most of the Chinese medicinal materials businesses will choose to use microwave Chinese medicinal materials insecticidal equipment for drying and sterilizing.

At present, the common drying methods of Chinese medicinal materials are as follows:

1.Drying method

One of the most common drying methods for most medicinal materials is drying. Choosing sunny, windy weather air to bask in, thin spread medicinal materials on the ground, use daylight illumination.

At the same time, attention should be paid to the timely turnover, ensure the uniform exposure of sunlight. Night air humidity is large, the need to put away the medicinal materials well to prevent the return of moisture.

2.Air-dried method

This method is often used in rainy weather, or for medicinal materials containing volatile oil and easy to run oil, discoloration of medicinal materials, such as jujube seed, cypress seed, anemone, bitter almond, codonopsis pilosula, asparagus officinalis, and so on. These medicinal materials should not be exposed to the sun, but in the sun is not too strong place or ventilated shade stand drying.

3.Oven drying

The drying room is not restricted by the weather, which can achieve the effect of insect repellent. However, it needs to be operated by professionals who are familiar with drying technology. Attention should be paid to building the drying room according to the technical requirements and standards of the specification. It needs to control the drying temperature and time according to different properties of medicinal materials.

4.Far infrared heating and drying method

Its drying principle is to transform electrical energy into far-infrared radiation, which is absorbed by the molecules of the medicine, producing resonance, causing the vibration and rotation of molecules and atoms, and causing the object to become hot. Through thermal diffusion, evaporation, and chemical changes, the purpose of drying is finally achieved.

5.Microwave drying equipment

This is a new technology rapidly developed in the 1960s. Microwave insecticidal equipment for Chinese medicinal materials uses induction heating and medium heating to make water and fat in Chinese medicinal materials absorb microwave energy in different degrees and convert it into heat to achieve the purpose of drying.

Microwave drying insecticidal machine can kill microorganisms and mold, and has disinfection effect, so that the medicinal materials reach the hygienic standard, in line with GMP certification, and can prevent the medicinal raw materials in the storage process of mildew and insects.

Microwave drying and sterilization equipment for Chinese medicinal materials has two major functions:

Flash drying:The first is to use the basic principle of the microwave. Polar water molecules and fats in Chinese medicinal materials and processed products can absorb microwave energy at different levels. In the alternating current electric field, the change of electronic field time makes polar molecules produce rotational vibration, which causes the mutual friction between molecules and generates heat, thus achieving the purpose of drying and sterilization.

Because microwaves can penetrate deep into the raw material, the drying time is usually between 1/10 and 1/100 of that of hot air. Therefore, the loss of volatile substances and aromatic components in traditional Chinese medicine is less. It is characterized by fast speed, short time, symmetrical heating, excellent product quality, and high thermal efficiency.

Sterilizing effect:Microwave sterilization is not affected by the environmental pollution of fuel waste gas emissions, can eliminate microbial strains and molds, with disinfection and sterilization function, but also can prevent mold and insects.

It’s a physical method of sterilizing that eliminates bacteria, molds, and insect eggs, as well as bacteria that harm the body, such as viral infections, without adding chemical preservatives. In the process of eliminating harmful microorganisms, it will not be toxic to the residual materials or radioactive substances pollution, health, and safety non-toxic. It will not change the color, taste, and nutritional value of the material.

Characteristics of microwave insecticidal equipment for Chinese medicinal materials:

1.The high degree of drying, short time, fast speed.

2. Good drying quality, low-temperature sterilization, maintain the internal quality and color of medicinal materials.

3. The drying effect is uniform and thorough.

4. The structure of drying equipment should be simple, parts simple standardization, easy to operate, easy to use control system, easy to maintain.

5.Energy-efficient.Microwaves act directly on the material, so there is no additional heat loss.


Through the above comparison, we can see why Chinese medicinal materials need microwave equipment for sterilization. Microwave insecticidal machine for Chinese medicinal materials uses microwave low-temperature insecticidal and bactericidal technology. It can kill larvae, adult worms, and bacteria at a lower temperature.

The microwave deworming process does not harm the effective ingredients of Chinese medicinal materials. It can achieve the required sterilization and deworming effect at low temperature and in a short time with conventional thermal and chemical deworming.

Increasing the storage period of Chinese medicinal materials has a visible effect on improving product quality. Microwave drying has become one of the most essential drying methods for Chinese medicinal materials due to its advantages of fast drying speed, symmetrical drying, excellent product quality, selective heating and drying, high thermal efficiency, and sensitive reaction.