A kind of method for fast freeze-drying active dendrobium officinale

A drying technology of Dendrobium candidum, which is applied in the direction of medical formula, medical preparations containing active ingredients, plant raw materials, etc., can solve the problems of high energy consumption, long production cycle, high operation cost, etc., and achieve small contact area and shorten production cycle , fast rehydration effect

Active Publication Date: 2018-06-12
ZHEJIANG JIANFENG HEALTH TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the invention is to overcome the disadvantages of high operating cost, long production cycle and large energy consumption in the prior art, and provide a method for quick freeze-drying of active dendrobium candidum

Method used

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  • A kind of method for fast freeze-drying active dendrobium officinale

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A method for quick freeze-drying active dendrobium officinale, comprising the steps of:

[0024] 1) Remove the leaves from the freshly harvested Dendrobium officinale, wash and drain;

[0025] 2) Perforate the Dendrobium candidum obtained in step (1), fix the perforated Dendrobium candidum on the mold, place it in a vacuum drying bin, cool the material to -35°C to -40°C, and keep it for 2 hours; The mold is a cubic metal mold body (1) with semi-columnar grooves (2) on the upper surface, and small holes (3) are arranged on the mold body; the metal is stainless steel.

[0026] 3) Vacuumize to a pressure of 20-100Pa and maintain for 2 hours; heat the shelf in the vacuum drying chamber to raise the material from -35°C to -40°C to 0°C, keep the pressure at 20-100Pa, and sublimate and dry 15 hours; the material is raised from 0°C to 20°C, the pressure is kept at 10-20Pa, and the desorption is dried for 2 hours; the material is raised from 20°C to 40°C, the pressure is kept w...

Embodiment 2

[0029] A method for quick freeze-drying active dendrobium officinale, comprising the steps of:

[0030] 1) Remove the leaves from the freshly harvested Dendrobium candidum, wash, drain, and cut into 10cm sections;

[0031] 2) Perforate the Dendrobium candidum obtained in step (1), fix the perforated Dendrobium candidum on the mold, place it in a vacuum drying bin, cool the material to -35°C to -40°C, and keep it for 3 hours; The mold is a cubic metal mold body (1) with semi-columnar grooves (2) on the upper surface, and small holes (3) are arranged on the mold body; the metal is copper.

[0032] 3) Vacuumize to a pressure of 20-100Pa and maintain for 3 hours; heat the shelf in the vacuum drying chamber to raise the material from -35°C to -40°C to 0°C, keep the pressure at 20-100Pa, and sublimate and dry 10 hours; the material is raised from 0°C to 20°C, the pressure is kept at 10-20Pa, and desiccated and dried for 3 hours, and the pressure of the material is raised from 20°C ...

Embodiment 3

[0035] A method for quick freeze-drying active dendrobium officinale, comprising the steps of:

[0036] 1) Remove the leaves from the freshly harvested Dendrobium candidum, wash, drain, and cut into 1cm sections;

[0037]2) Perforate the Dendrobium candidum obtained in step (1), fix the perforated Dendrobium candidum on the mold, place it in a vacuum drying bin, cool the material to -35°C to -40°C, and keep it for 1 hour; The mold is a cubic metal mold body (1) with semi-columnar grooves (2) on the upper surface, and small holes (3) are arranged on the mold body; the metal is stainless steel;

[0038] 3) Vacuumize to a pressure of 20-100Pa and maintain for 1 hour; heat the shelf in the vacuum drying chamber to raise the material from -35°C to -40°C to 0°C, keep the pressure at 20-100Pa, and sublimate and dry 20 hours; the material is raised from 0°C to 20°C, the pressure is kept at 10-20Pa, and desiccated and dried for 1 hour, and the pressure of the material is raised from 2...

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Abstract

The invention discloses a method for rapid freeze drying of active dendrobium officinale. The method comprises the following steps: first, leaves of harvested fresh dendrobium officinale are removed, and washing and draining are carried out; second, punching is carried out, the dendrobium officinale is fixed on a die, the die is placed on a shelf of a vacuum drying container, material cooling is carried out, the die is a cube-shaped metal die body (1) with an upper surface equipped with a half-cylindrical groove (2), small holes (3) are arranged in the die body; third, vacuum-pumping is carried out, the shelf in the vacuum drying container is heated, the material temperature is risen to 0 DEG C, the pressure intensity is kept at 20-100Pa, drying is carried out; the material temperature is risen from 0 DEG C to 20 DEG C, the pressure intensity is kept at 10-20Pa, drying is carried out; the material temperature is risen from 20 DEG C to 40 DEG C, the pressure intensity is kept within 10Pa, drying is carried out; pressurization to a normal pressure is carried out. The freeze-drying rate is high, freeze-drying time is saved effectively, freeze-drying energy consumption is reduced, the product appearance is straight, the color is not damaged, and mouthfeel is light and crisp.

Description

technical field [0001] The invention relates to a method for freeze-drying dendrobium officinale, in particular to a method for rapidly freeze-drying active dendrobium officinale. Background technique [0002] Dendrobium officinale Kimura et Migo is the dry stem of Dendrobium officinale Kimura et Migo, named for its iron-green skin. Dendrobium plants can be divided into dozens of varieties such as Tiepi, Nobile, Huoshan, Huangcao, Huancao, and Horsewhip according to their shape and origin. Among them, Dendrobium candidum is the most precious. Wild Dendrobium officinale grows on semi-shady rocks and bark in mountains at an altitude of 100-3000m. It likes warm and humid climates and semi-shady environments, and is not cold-resistant. The fresh stems of Dendrobium candidum can be eaten directly, or stewed, or made into tea, or soaked in wine, and are usually processed into dry products, such as Tiepi Fengdou. Dendrobium candidum has good medicinal value and health care value,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61K36/8984
Inventor 陆国胜於洪建
Owner ZHEJIANG JIANFENG HEALTH TECH
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