Cordyceps sinensis (Berk.) Sacc. is a dried complex of the parasitic seats and larval bodies of the family Batmoths, belonging to the family Fabaceae. Excavate at the beginning of summer when the spores have not yet been released. Cordyceps sinensis is composed of a fungal cluster that connects the body of the insect to the head of the insect. The insect body resembles a silkworm, measuring 3-5cm in length and 0.3-0.8cm in diameter; its surface is dark yellow to yellow brown, with 20-30 circular patterns, and the circular patterns near the head are relatively fine; Head brownish red; 8 pairs of feet, with 4 pairs in the middle being more prominent; Crispy, easy to break, slightly flat cross-section, pale yellow white. The pedestal is slender cylindrical, measuring 4-7cm in length and 0.3cm in diameter. The surface is dark brown to dark brown, with fine longitudinal wrinkles and slightly enlarged upper part; Flexible in texture, with a white cross-section.

China is the main producer of Cordyceps sinensis, as it is only produced on the Qinghai Tibet Plateau. Cordyceps is mainly distributed in Xizang, Qinghai, Sichuan, Gansu, and Yunnan at high altitudes of 3500 meters to 5500 meters above sea level (the altitude has increased in recent years). Among them, cordyceps producing areas above 4500 meters above sea level are "high-quality" producing areas. The so-called high-quality is where there are more large-scale cordyceps. The famous high-quality producing areas include Yushu and Golog in Qinghai, Naqu, Changdu and Litang in Ganzi, Xizang. 17 counties in the vast eastern and southern regions of Qinghai province are widely distributed with wild cordyceps, accounting for more than half of the world's cordyceps production. They are Yushu County, Zaduo County, Chengduo County, Zhiduo County, Nangqian County, and Qumalai County within the jurisdiction of Yushu Tibetan Autonomous Prefecture in Qinghai province. Maqin County, Gande County, Dari County, and Jiuzhi County within the jurisdiction of Qinghai Guoluo Tibetan Autonomous Prefecture. Hualong Hui Autonomous County in the Haidong area of Qinghai Province. Gonghe County, Tongde County, and Xinghai County within the jurisdiction of Qinghai Hainan Tibetan Autonomous Prefecture.

Advantages of freeze-dried Cordyceps sinensis

Vacuum freeze-drying, also known as freeze-drying, refers to the process of drying solid materials directly into a gaseous state without going through the liquid phase under vacuum conditions. During the freeze-drying process, the solvent directly sublimates from the solid state to the gas state, so it does not destroy the original chemical structure and form of the solute. Materials with biological activity can still restore their conformation and biological function before freeze-drying after re dissolution. Therefore, freeze-drying is a drying method that has the least impact on the properties of the dried substance. Every year, a large quantity of cordyceps enters the market. Except for the portion directly consumed by the consumer population, most of them are freeze-dried and packaged for sale around the world. The reason why freeze-drying is used is because freeze-dried cordyceps has the following advantages:

• Freeze dried cordyceps largely retains substances beneficial for human absorption, such as cordycepin, cordycepin acid (i.e. D-mannitol), cordyceps polysaccharides, etc.

• Freeze dried cordyceps retains its original food structure and maintains the original form of Cordyceps sinensis.

• Freeze dried insect grass has better color and appearance.

• Good rehydration performance, closer to the quality of fresh cordyceps.

• There is no surface hardening problem caused by general drying methods.

• Easy to store and transport for a long time.

The general process of freeze-drying Cordyceps sinensis

Stripping → Cleaning(Cannot be washed with water, as washing with water can cause the effective ingredients of Cordyceps sinensis to leach and lose in water.)→ Grading(A800 or less per kilogram, B-grade 800-1500 per kilogram, C-grade 1500 or more per kilogram; ）→ Pre freeze(Form of segmented cooling) →sublimation drying(Slope or gradient heating)→ Analyze drying(Gradient heating improves efficiency) → Packaging (vacuum packaging)

Cordyceps freeze-drying equipment

Beijing Songyuan Huaxing Technology Development Co., Ltd. was founded in 2000, focusing on the research and development, production, and sales of vacuum freeze-drying technology products. For the freeze-drying of cordyceps sinensis products, several sets of freeze-drying process curves for cordyceps sinensis in different regions have been summarized after years of research, and the beneficiary users are all over Qinghai, Xizang, Sichuan, Yunnan, Gansu and abroad. Songyuan freeze-drying has launched three cost-effective products for cordyceps freeze-drying in the market, with different freeze-drying processes in different regions.

LG-03DCordyceps freeze-drying machine (cost-effective Cordyceps freeze-drying machine)

1. LG-03D (4 material trays), each batch can freeze dry 2000-2600 Cordyceps sinensis.

2. The integrated design of the box trap results in a shorter sublimation channel, which is conducive to the rapid sublimation of a large amount of water vapor.

3. Adopting aerospace grade high transparency organic glass doors, the entire process of sample freeze-drying changes can be observed in real time.

4. Easy to operate and highly automated, the entire freeze-drying process can be completed with just one button.

5. Pre set standard freeze-drying process for Cordyceps sinensis, without the need for in-depth understanding of tedious freeze-drying principles and processes, with one click process import.

6. Intelligent fault diagnosis technology displays fault information in text form, greatly facilitating equipment maintenance and fault repair.

7. Security lock function. Prevent misoperation to modify system status and process parameters, which may cause freeze-drying failure or instrument damage.

8. Intelligent energy-saving and temperature control technology for partitions, with high temperature control accuracy, energy saving, and stable and reliable system.

9. One click quick defrosting technology, safe and efficient.

LG-1FCordyceps freeze-drying machine (high-performance cordyceps freeze-drying machine)

1. LG-1F(6A material tray)Each batch can be freeze-dried for 5000-6500根冬虫夏草。

2. Industrial grade touch screen+Songyuan freeze-drying SH-HPSC-II modular controller, the system is stable and reliable, with high control accuracy. The freeze-drying FD-PILOT control system and drying curve optimization control algorithm can control the heating rate of the product during the drying stage.

3. Humanized chassis design allows for easy disassembly and maintenance channels without the need for tools, providing convenience for users to maintain and upkeep their devices in the future.

4. The electric defrosting system with safety control is easy to operate, has high defrosting efficiency, and improves production capacity.

5. The freeze-drying process automatically generates a curve graph, and the graph can freely select data according to needs. The graph within the selected range can be zoomed in and out to the entire touch screen interface for browsing. At the same time, the graph can be saved to an external storage for printing and retention with one click.

6. The specialized design of the control system can save hundreds of freeze-drying process formulas for Cordyceps sinensis. Each formula can be set with 36 temperature control sections to improve process optimization rate. The intelligent data recording system can query historical curves and records, and can modify storage cycles and export data records to a USB flash drive in real time.

7. Flexible manual+automatic control mode, manual exploration of process, automatic batch production, real-time alarm display and historical alarm query function, convenient for fault diagnosis and equipment maintenance, user level and password can be set, and operation management can be decentralized.