Drying and sterilization of medicinal herbs using microwave equipment
Entering the hot and rainy summer season, the air is hot and humid, and most stored and processed Chinese medic...
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Entering the hot and rainy summer season, the air is hot and humid, and most stored and processed Chinese medicinal materials are prone to problems such as moisture regain, softening, surface mold, breeding of insect eggs and bacteria, and insect damage. Whether it is root and stem, flower and fruit, or seed based medicinal herbs, there will be damage to their appearance and loss of effective ingredients, which not only increases storage losses but also directly affects the sales and use value of medicinal herbs. This is a common problem faced by the traditional Chinese medicine business and processing industry every summer.
So what are the characteristics of using a microwave tunnel oven to process Chinese medicinal materials?
1. It can penetrate deep into the interior to solve the problem of incomplete surface treatment
Microwave has penetrability and can act on the inside of the medicinal materials. It can not only kill mold and bacteria on the surface, but also kill dormant eggs hidden in the texture, gap and core of the medicinal materials. It can eliminate hatching worms from the source in the later period. disinfection and sterilization evenness is better than sunshine and fumigation, reducing the probability of subsequent storage deterioration.
2. Low temperature operation to preserve the appearance and medicinal ingredients of medicinal materials
The processing temperature can be controlled at a relatively low level, which is different from high-temperature baking. It will not damage the effective medicinal substances such as anthocyanins, volatile oils, polysaccharides, etc. in medicinal materials, and will not cause problems such as discoloration, cracking, charring, and loss of aroma.
3. Suitable for large-scale processing, saving time and effort
It is a continuous flow line operation, which can process medicinal materials in large quantities without interruption. It does not need to be manually turned and sorted repeatedly. Compared with batch drying and manual disinfection and sterilization, it can greatly save labor and time costs, and is suitable for processing plants and medicinal materials market to prepare goods in large quantities for pretreatment.
4. No residue in physical processing, high compliance
The whole process is purely physical, warm, disinfection and sterilization and drying, without adding insect and mold prevention chemicals, no pesticide residues, and will not change the physical and chemical properties of the medicinal materials themselves. The finished products meet the quality inspection, drug use, and circulation standards of Chinese medicinal materials, with a wide range of applications.
5. Synchronize humidity control to reduce the probability of deterioration in the long run
The processing can synchronously remove excess free water inside the medicinal materials, stabilize the moisture content of the medicinal materials, and prevent mold and insect eggs from living in suitable humidity. The processed medicinal materials have strong storage stability in summer.
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