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Freeze-dried dendrobe product and preparation method thereof

A dendrobium, freeze-drying technology, applied in drying, pharmaceutical formulations, drying solid materials, etc., can solve problems such as the influence of product appearance and active ingredients, the rarity of freeze-dried products, and the difficulty of seeing dendrobium

Active Publication Date: 2015-12-23
ANHUI ZHILAN BIOENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The actual measurement shows that conventional freeze-drying can only reduce the moisture content of raw medicinal materials to about 30-20%, and the remaining free water and bound water still need to be dried out by heating (with vacuum or normal pressure), which not only affects the appearance of the product and the active ingredients. Influence, and make the drying cost high, consume a lot of drying time
In view of this, it is difficult to see vacuum-dried products of Dendrobium in the market, and freeze-dried products are even rarer.

Method used

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  • Freeze-dried dendrobe product and preparation method thereof
  • Freeze-dried dendrobe product and preparation method thereof
  • Freeze-dried dendrobe product and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] 1. Harvest the fresh strips of Dendrobium huoshanense for shaping and grading;

[0044] 2. Immerse the fresh strips of Dendrobium Huoshanense in 200ppm sodium hypochlorite solution for 10 minutes for disinfection. The ratio of fresh strips of Dendrobium Huoshanense to sodium hypochlorite solution is 100g: 500mL;

[0045] 3. Wash with 0.05g / L Vc / distilled aqueous solution, and dry at room temperature in a clean environment until the surface is dry;

[0046] 4. Wrap fresh strips into bundles, immerse in liquid nitrogen (temperature -196°C), and freeze within 60 seconds;

[0047] 5. Airflow method (air temperature is 18°C, flow rate is 0.5m / s) to dry the surface of the material, and the time is controlled within 15 minutes;

[0048] 6. Repeat steps 4-5 4 times;

[0049] 7. Immerse the material again in liquid nitrogen (at a temperature of -196°C), and complete the freezing within 60 seconds to obtain the frozen material;

[0050] 8. Send the frozen material into the freez...

Embodiment 2

[0079] Detection of antioxidant capacity index (ORAC) of extracts of Dendrobium nodii dried by different methods

[0080] The ORAC analysis method is used to detect the antioxidant capacity index of the extracts of Dendrobium dried in different ways. The ORAC analysis method is the international AOAC standard method recommended by the American Association of Analytical Chemists (AOAC), and is also the standard method of the United States Department of Agriculture (USDA) and the National Institutes of Health. (NIH) and many other scientific and technological research institutions recognized the standard analysis method to measure the antioxidant capacity of products. The principle is: sodium fluorescein emits 527nm fluorescence under the excitation of 485nm light, which can be oxidized by peroxyl radicals released by AAPH to make the fluorescence properties disappear. When antioxidants exist, they can compete with sodium fluorescein for oxidants and slow down the rate of fluore...

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Abstract

The invention provides a freeze-dried dendrobe product and a preparation method thereof. The preparation method comprises the following steps: performing freezing-thawing processing repeatedly on fresh dendrobe strips; performing freezing processing on the fresh dendrobe strips which are subjected to the freezing-thawing processing repeatedly; performing freezing-dehydrating on the obtained frozen dendrobe strips to obtain the freeze-dried dendrobe product. The inventor discovers that ditch-shaped fractures with different widths are generated in the outer surface of a dendrobe medicinal material when the freezing temperature is lower than -150 DEG C and the freezing time is shorter than 60 seconds, and simultaneously, honeycombed uniform gaps are generated in the medicinal material. The areas of the fractures and honeycombs can be enlarged remarkably by freezing and thawing repeatedly; after entering a freezing-drying environment, the sublimation surface area can be increased greatly by the honeycomb and fracture structures; the freezing-drying time can be shortened; the dehydration rate of finished products are improved.

Description

technical field [0001] The invention belongs to the technical field of traditional Chinese medicine processing, and in particular relates to a freeze-dried dendrobium dendrobium product and a preparation method thereof. Background technique [0002] Dendrobium is a plant of the genus Dendrobium in the family Orchidaceae. It is a group that develops from the center of tropical Southeast Asia to subtropical climate conditions. There are about 1,500 species in the world, and they are widely distributed in tropical Asia, subtropical regions and Oceania. There are 74 species and 2 varieties in my country, which are mainly distributed in the south of Qinling Mountains and Huaihe River. The distribution centers of domestic plants in this genus are Yunnan, Guizhou, Guangxi, Guangdong and Taiwan. This is a group with thin stems and small flowers among domestic species, such as Dendrobium candidum, Dendrobium hooked, and Dendrobium huoshanense, which are the original plants of the tra...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61K36/8984F26B5/06
Inventor 窦军何家杰
Owner ANHUI ZHILAN BIOENG
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