Method for extracting loganin from dogwood

A technology of dogwood and loganin, applied in chemical instruments and methods, organic chemistry, sugar derivatives, etc., to achieve the effect of saving reagents and time

Inactive Publication Date: 2013-03-13
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

So far, there has been no report on the use of microwave technology to extract loganin from Cornus officinalis

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Accurately weigh 2g dogwood, dry it at 40℃, and crush the coarse powder with a particle size of 60 mesh, add 20mL of distilled water, at 30℃, 200W, microwave irradiation time 5min to obtain the crude loganin extract, and filter the extract , Centrifugation, concentration, and drying to obtain Cornus officinalis extract. The extraction rate was 0.39%.

Embodiment 2

[0023] Accurately weigh 2g of dogwood, dry it at 50℃, and crush the coarse powder with a particle size of 60 mesh, add 40mL distilled water, at 40℃, 250W, microwave irradiation time 10min to obtain the crude loganin extract, filter the extract , Centrifugation, concentration, and drying to obtain Cornus officinalis extract. The extraction rate is 0.59%.

Embodiment 3

[0025] Accurately weigh 2g of cornus officinalis, dry it at 60℃, and pulverize the coarse powder with a particle size of 60 mesh, add 60mL distilled water, at 50℃, 300W, microwave irradiation time 15min to obtain crude loganin extract, and filter the extract , Centrifugation, concentration, and drying to obtain Cornus officinalis extract. The extraction rate is 0.68%.

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PUM

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Abstract

The invention belongs to the field of methods for extracting loganin, and particularly relates to a method for extracting loganin from the dogwood. The method for extracting the loganin from the dogwood comprises the following steps in sequence: drying fresh dogwood; crushing the dogwood; extracting the dogwood by water or an organic solvent along with microwave radiation; and filtering, centrifuging and concentrating the extracting solution. The method for extracting the loganin from the dogwood has the beneficial effects that the extraction rate of the loganin in the dogwood can be up to 0.8% by virtue of the steps mentioned above, and the microwave extraction mode is adopted and used for extracting the loganin from the dogwood, so that the advantages of saving time and agents are realized.

Description

[0001] technical field [0002] The invention belongs to the field of extracting methods of loganin, and in particular relates to a method for extracting loganin from cornus officinalis. Background technique [0003] Cornus officinalis sieb (Cornus officinalis sieb, et Zucc.) is a small tree or shrub of the genus Cornus in the family Cornaceae. Li Shizhen's "Compendium of Materia Medica" in the Ming Dynasty records that Cornus officinalis is non-toxic and has the functions of "warming the middle, expelling cold, dampening the spleen, removing turbidity, strengthening yin, benefiting essence, improving eyesight, strength, and longevity" after long-term use. Loganin has the effect of significantly enhancing the body's immune function, and is one of the main active ingredients of Cornus officinalis. [0004] Traditional medicine believes that total glycosides have the functions of nourishing liver and kidney, nourishing yin and strengthening yang, etc. Modern pharmacological ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07H17/04C07H1/08
Inventor 张成如
Owner SHANDONG UNIV
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