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A kind of dendrobium candidum freeze-drying method

A technology of Dendrobium officinale and drying method, which is applied in the directions of drying solid materials, drying solid materials without heating, and promoting the preliminary treatment of drying of solid materials, etc. and other problems, to achieve the effect of not being crunchy and delicious, saving energy and improving storage stability.

Active Publication Date: 2022-05-24
广西蓝发生物科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But the freeze-drying of Dendrobium officinale is more difficult, and prior art generally is to cut into very thin slice, and thickness is a little bigger just to be difficult to freeze-drying evenly; Or punch dense hole on stem bark with needle after cutting into sections, make the sale of product relatively poor
[0005] In recent years, there have been many research reports on polysaccharides and alkaloids of Dendrobium officinale at home and abroad, but relatively few studies on its volatile oil, only reports on the volatile components of Dendrobium officinale flowers

Method used

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  • A kind of dendrobium candidum freeze-drying method
  • A kind of dendrobium candidum freeze-drying method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A method for freeze-drying of Dendrobium officinale, comprising the steps:

[0029] (1) Fumigation: Choose fresh Dendrobium officinale with good palatability and good palatability, which can basically melt in the mouth after chewing; no medicinal, bitter, strange, light and sweet taste Small sections, washed, blowing the surface with a gas with a temperature of 15 °C until the surface is dry, fumigated with ethanol vapor with a temperature of 80 °C for 1 min, and then cooled to room temperature (20 °C);

[0030] (2) pressure maintenance: put the Dendrobium officinale in step (1) into a high pressure tank, fill with nitrogen, and adjust the pressure in the tank to be 100MPa and maintain the pressure for 3min, then release the pressure to normal pressure in 0.2min;

[0031] (3) Pre-freezing: take out the Dendrobium officinale in step (2), absorb the surface moisture, move it to a freezer within 2 minutes, and cool the Dendrobium officinale to -40°C at a speed of 1°C / min w...

Embodiment 2

[0036]A method for freeze-drying of Dendrobium officinale, comprising the steps:

[0037] (1) Fumigation: Choose fresh Dendrobium officinale with good palatability and good palatability, which can basically melt in the mouth after chewing; no medicinal, bitter, strange, light, sweet, and palatable Small section, washed, blow its surface with a gas with a temperature of 16°C until the surface is dry, fumigated with ethanol vapor with a temperature of 79°C for 1.5 minutes, and then cooled to room temperature;

[0038] (2) pressure maintaining: put the Dendrobium officinale in step (1) into a high pressure tank, fill with nitrogen, adjust the pressure in the tank to be 140MPa and maintain the pressure for 2.5min, then release the pressure to normal pressure in 0.3min;

[0039] (3) Pre-freezing: take out the Dendrobium officinale in step (2), absorb the surface moisture, move it to the freezer within 3 minutes, and cool the Dendrobium officinale to -40°C at a rate of 0.5°C / min wit...

Embodiment 3

[0044] A method for freeze-drying of Dendrobium officinale, comprising the steps:

[0045] (1) Fumigation: Choose fresh Dendrobium candidum officinalis with good palatability and good palatability, which can basically melt in the mouth after chewing; no medicinal, bitter, strange, light and sweet taste, and good palatability Small section, washed, blow its surface with a gas with a temperature of 17 °C until the surface is dry, fumigated with ethanol vapor with a temperature of 79.5 °C for 2 minutes, and then cooled to room temperature;

[0046] (2) pressure maintenance: put the Dendrobium officinale in step (1) into a high pressure tank, fill with nitrogen, the pressure in the adjustment tank is 180MPa and maintain the pressure for 2min, and then release the pressure to normal pressure in 0.4min;

[0047] (3) Pre-freezing: take out the Dendrobium officinale in step (2), absorb the surface moisture, move it to the freezer within 2.5 minutes, and cool the Dendrobium officinale ...

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Abstract

The invention discloses a freeze-drying method of dendrobium officinale, which comprises the steps of fumigation, pressure keeping, pre-freezing, freezing, sublimation and the like. The dendrobium candidum product obtained by the method of the present invention has no surface hardening, and the tissue is porous and spongy. After adding water, the rehydration speed is fast, and the original properties are almost restored immediately. The dissolution rate of substances such as alkaloids and polysaccharides in hot water is high. The speed is fast, the loss of volatile oil components is smaller than that of fresh products, and more volatile components are effectively retained. . Moreover, it is light in weight, resistant to storage, and has no special requirements on the ambient temperature. The product is vacuum-packed or nitrogen-filled and stored away from light, with a long shelf life. It is more conducive to the stability of Dendrobium officinale in the storage process, and is of great significance to improving its market competitiveness and increasing economic benefits.

Description

technical field [0001] The invention relates to the field of food processing, in particular to a freeze-drying method for Dendrobium officinale. Background technique [0002] Dendrobium officinale Kimura et Migo is the dry stem of the orchid family Dendrobium officinale perennial epiphytic herb. The effect of clearing away heat is used for heat-related injuries, dry mouth and polydipsia, deficiency of stomach yin, retching due to lack of food, persistent deficiency of heat after illness, prosperous fire due to yin deficiency, steaming of the bones, fatigue and heat, dark and unclear eyes, and atrophy of muscles and bones. Dendrobium candidum is an expensive and endangered medicinal material. Modern clinical applications and pharmacological studies have confirmed that Dendrobium officinale has the miraculous effects of nourishing yin and moistening the lungs, nourishing the stomach and promoting body fluids, strengthening the brain and improving eyesight, protecting the live...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F26B1/00F26B5/06
CPCF26B1/00F26B5/06
Inventor 方良材黄卫萍黄少军黄春秋蒋瑜戴传勇
Owner 广西蓝发生物科技有限公司
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