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Freeze-drying method of Cordyceps sinensis

A technology of Cordyceps sinensis and drying method, which is applied in the direction of drying solid materials, drying solid materials without heating, drying, etc., which can solve the problems of difficulty in realizing industrial production and small scale, and achieve energy saving, reduction of breakage rate, and improvement of freezing The effect of dry efficiency

Active Publication Date: 2019-05-24
YICHANG SHANCHENGSHUIDU CORDYCEPS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The freeze-drying techniques reported in the existing literature can only freeze-dry small-scale Cordyceps sinensis, and are not suitable for freeze-drying of kilogram-level samples. There are only 100 freeze-dried Cordyceps sinensis, about 50g~100g, the scale is too small to realize industrial production

Method used

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  • Freeze-drying method of Cordyceps sinensis
  • Freeze-drying method of Cordyceps sinensis

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] The present embodiment adopts the LYO-2 type freeze dryer of Shanghai Tofflon Science and Technology Co., Ltd. to freeze-dry the fresh Cordyceps sinensis of grade A below 800 per kilogram of 10kg, and the method is as follows:

[0043] (1) Pre-freezing: the harvested and cleaned fresh A-grade Cordyceps sinensis is cooled in stages from room temperature to -40°C, and the staged cooling procedure is: cool down from room temperature to -10°C within 0.5 hours ; Then cool down from -10°C to -25°C within 0.5h; finally cool down from -25°C to -40°C within 0.5h, and keep for 6h;

[0044] (2) Sublimation drying: The heating time of the shelf is 0.5h, so that the temperature of the shelf is raised from -40°C to -10°C, and then the sublimation drying is carried out in the form of temperature programming, and the temperature is raised from -10°C to -6°C. The temperature programming form is: the shelf temperature is -10°C, adjust the pressure to 35Pa, maintain for 1h, then adjust to...

Embodiment 2

[0049] In this embodiment, the LYO-2 type freeze dryer of Shanghai Tofflon Science and Technology Co., Ltd. was used to freeze-dry the fresh Cordyceps sinensis of A grade of 10kg below 800 / kg.

[0050] The difference with embodiment 1 is:

[0051] Step (1) Pre-freezing: The temperature is lowered from room temperature to -40°C in the form of segmental cooling, and the segmental cooling program is: cooling to -10°C within 0.5h; then cooling from -10°C within 0.5h to -25°C; cool down from -25°C to -40°C within the last 0.5h, and maintain for 8h;

[0052] Step (2) Sublimation drying: The heating time is 0.5h to raise the temperature of the shelf from -40°C to -10°C, and then the sublimation drying is carried out in the form of temperature programming, and the temperature is raised from -10°C to -6°C. The temperature programming form is as follows: shelf temperature -10°C, adjust pressure to 45Pa, maintain for 2h, then adjust to 15Pa, maintain for 4h, and perform 2 cycles; shelf ...

Embodiment 3

[0057] The difference between this example and Example 1 is that this example adopts the LYO-2 type freeze dryer of Shanghai Tofflon Science and Technology Co., Ltd. to freeze-dry 10 kg of B-grade fresh Cordyceps sinensis.

[0058] The temperature program in step (2) is as follows: raise the temperature for 0.5 hours to increase the temperature of the shelf from -40°C to -10°C, adjust the pressure to 30Pa, maintain it for 1h, then adjust it to 10Pa, maintain it for 2.5h, and perform 2 cycles ;The temperature of the shelf is raised to -8°C, adjust the pressure to 30Pa, maintain for 1h, then adjust to 10Pa, maintain for 2.5h, and perform 3 cycles; raise the temperature of the shelf to -6°C, adjust the pressure to 30Pa, maintain for 1h, Then adjust to 10Pa, maintain 2.5h, and carry out 2 cycles.

[0059] Finally, the color of the finished product is yellow-brown, with a drying rate of 96% and a plumping rate of 96%.

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Abstract

The invention discloses a freeze-drying method for cordyceps sinensis. The method comprises the following steps: (1) collecting fresh cordyceps sinensis; (2) removing mud and cleaning; (3) grading; (4) pre-freezing: reducing the room temperature to -40 DEG C in the manner of segmented cooling; (5) sublimation drying: increasing temperature for 0.5h, increasing the temperature of a shelf to -10 DEG C, then performing sublimation drying on cordyceps sinensis at different levels in the manner of increasing temperature according to different programs, and increasing temperature from -10 DEG C to -6 DEG C; (6) desorbing drying; and (7) softening. According to the disclosed provided by the invention, 10kg of cordyceps sinensis can be freeze-dried once; the effects and nutritional ingredients are kept well; the color is from golden yellow to brownish yellow; the satiation rate is excellent; the drying efficiency is high; the cordyceps sinensis is convenient to transport and carry; and the freeze-drying method can be popularized and applied in a large scale.

Description

field of invention [0001] The invention relates to the technical field of cordyceps preservation, in particular to a method for large-scale freeze-drying of cordyceps. Background technique [0002] Cordyceps sinensis is a complex of the subunit and larval corpse of the fungus Cordyceps sinensis (Berk) Sacc of the family Ergotaceae which parasitizes on the larvae of the bat moth family insects. According to "Materia Medica Congxin" written by Wu Yiluo, a famous doctor in the Qing Dynasty in 1757, Cordyceps sinensis has the effect of "protecting the lungs and kidneys, stopping bleeding and resolving phlegm, and eliminating fatigue". It is mainly produced in the plateau alpine meadows at an altitude of 3500-5000m in Qinghai, Tibet, Sichuan, Yunnan and other provinces of my country. Cordyceps sinensis has a good curative effect on diseases such as tuberculosis, sputum blood, asthma, night sweats, back pain, impotence and spermatorrhea. Modern pharmacological studies have also ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61K36/068F26B5/06
CPCA61K36/068A61K2236/13A61K2236/17F26B5/06
Inventor 李光荣汪小东梁蜜邓志贤洪正茂陶盛昌钱正明
Owner YICHANG SHANCHENGSHUIDU CORDYCEPS
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