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Ginkgo flavone extraction method

An extraction method and technology of ginkgo flavonoids are applied in the field of ginkgo flavonoid extraction, which can solve the problems of long separation period, low total flavonoid glycosides and high cost, and achieve the effects of reducing the total amount of processing, preventing rancidity and reducing influence.

Active Publication Date: 2011-04-06
江振鸣 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the content of total flavonoid glycosides in the extract after alcohol extraction is low, and the presence of other components increases the processing capacity and difficulty of the macroporous resin adsorption purification process, which not only affects the product purity, but also has a long separation cycle and high cost

Method used

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Experimental program
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Embodiment Construction

[0018] The following further describes the present invention in detail through specific embodiments to help understand the content of the present invention.

[0019] The extraction process is as follows:

[0020] (1) Take 100 kg of Ginkgo biloba leaves and coarsely grind them to 8 mesh, place them in a dynamic extraction tank, add ten times the amount of purified water and heat to 50±5°C, dynamically extract three times, and combine the extracts;

[0021] (2) Cool the aggressive liquid to below 15°C, let it stand for 12 hours, and filter the extract to separate impurities and other substances;

[0022] (3) Then the filtrate is spray-dried, and the dried product is collected;

[0023] (4) Dissolve the dried substance into ethanol solution, use 700l of 50% ethanol (v / v) solution, heat the solvent to reflux for extraction, concentrate, recover the ethanol, and collect the concentrated solution for later use;

[0024] (5) The concentrated solution is adsorbed and purified with D140 macroporo...

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Abstract

The invention discloses a ginkgo flavone extraction method, comprising the steps of: coarsely crushing the ginkgo leaves; adding deionized water and extracting; standing the extract at a temperature of 15 DEG C for 12 hours; filtering and carrying out spray drying on the filtrate; collecting the dry materials and dissolving the dry materials with an ethanol solution; standing and concentrating the supernate to obtain a concentrated solution; dissolving the concentrated solution with the ethanol solution and then absorbing and purifying with macro-porous resin; washing with water until the effluent liquid has light color; and eluting with the ethanol solution to obtain the ginkgo flavone product. The extraction process can be used for extracting the flavones compound to the greatest extent, ensures that other lactone components are not extracted, and increases the content of the flavones.

Description

Technical field [0001] The invention relates to a method for dynamically extracting ginkgo flavonoids from ginkgo leaves by warm soaking. Background technique [0002] The ginkgo tree has magical vitality and is known as the "living fossil" and the "king of longevity". my country is the main producing area of ​​ginkgo trees, accounting for about 70% of the world's total. Ginkgo biloba is the leaf of Ginkgo biloba, a plant belonging to the Ginkgo family. According to analysis and determination, Ginkgo biloba leaves contain more than 160 ingredients, among which there are more than 30 kinds of flavonoid active substances. In addition, Ginkgo biloba also contains essential amino acids and beneficial trace elements. Different collection seasons have an impact on the content of flavonoids. Ginkgo biloba leaves have little change in flavonoid content in summer and autumn, while young leaves in spring have the highest flavonoid content, so ginkgo leaves collected in spring are used as...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61K36/16A61P7/02A61P9/10A61P9/12A61P25/28A61K127/00
Inventor 江振鸣
Owner 江振鸣