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Extracting and separating method of langdu root chromone from Stellera chamaejasme L. and its uses

A technology of chamaejasma chamaejasme and separation method, applied in the fields of application, botany equipment and method, animal repellent, etc., can solve the problems of low extraction efficiency, complex and cumbersome separation methods, unsuitable for industrial scale production, etc., and achieve extraction efficiency High and simple separation method

Inactive Publication Date: 2004-11-10
NORTHWEST A & F UNIV
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Problems solved by technology

These studies have a common feature, that is, they all belong to the basic theoretical research of phytochemistry or natural product chemistry. The research methods are all conventional methods in the laboratory, the extraction efficiency is low, the separation method is complicated and cumbersome, and it is not suitable for industrial scale production at all.
Secondly, all the research reports on chamaejasma chromone seldom involve the study of its biological activity, and there is no research on chamaejasma chromone on plant pathogens, that is, as a plant fungicide

Method used

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  • Extracting and separating method of langdu root chromone from Stellera chamaejasme L. and its uses
  • Extracting and separating method of langdu root chromone from Stellera chamaejasme L. and its uses
  • Extracting and separating method of langdu root chromone from Stellera chamaejasme L. and its uses

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Embodiment Construction

[0028] 1. See figure 1 , the present invention adopts 4-step method to obtain different contents of chamaejamae chromone, that is, extraction, crude fractionation by silica gel column chromatography for the first time, crude fractionation by silica gel column chromatography for the second time, purification by sephadexLH-20, and separation by each step The contents of chamaejamae chromone in the obtained target substance are respectively 5%-25%, 45%-55%, 80%-90%, and 95%-99%. Its technological process is as follows:

[0029] 1.1. Crush the root of chamaejasma to a certain extent, and its fineness is not strictly required, generally 1mm in diameter. According to the ratio of the weight (kg) of the wolfba root powder and the solvent volume (L) of 1:8, intermittent ultrasonic extraction is adopted, and the extraction temperature is 40°C. Each batch of raw materials was continuously extracted three times with the same solvent, and the extraction time was 40 min each time. The u...

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Abstract

The invention relates to a process for extracting and separating radix euphorbiae ebracteolatae chromone from Daphnetin radix euphorbiae ebracteolatae and use thereof, wherein the preparation process comprises the steps of, using Daphnetin radix euphorbiae ebracteolatae as raw material, using 4-10 times weight of ethyl acetate or acetone or mixture of ethyl acetate and acetone as solvent, extracting three times continuously by adopting 30-55 deg. C ultrasonic wave under normal pressure, the time for each extraction being 30-50 mins, wherein 60%-90% radix euphorbiae ebracteolatae chromone can be prepared through filtering, concentrating and column chromatography chromatography.

Description

1. Technical field: [0001] The present invention relates to a comprehensive utilization of chamaejasma chamaejasme in the field of medicine, veterinary medicine and pesticide intermediates or original medicines, in particular to a method for extracting and separating chamaejasma chamaejasme from chamaejasma chamaejasme and its application as a plant fungicide . 2. Background technology: [0002] Stellera chamaejasme (Stellera Chamaejasme L.) is a plant of the genus Stellera chamaejasme, and its aliases include chamaejasme, chrysanthemum, etc. Its root is the poisonous matrix of traditional Chinese medicine, which has the functions of dispelling stagnation, dispelling water, relieving pain and killing insects. As early as 1959, in the "China Soil Pesticides", there is a record of the application of chamaejasma chamaejasme as a botanical pesticide. The water extract is sprayed on the leaves of plants to prevent and control leaf bean aphids, cabbage aphids, leaf rust, etc. In...

Claims

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Application Information

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IPC IPC(8): A01N43/16C07D311/22
Inventor 周乐
Owner NORTHWEST A & F UNIV
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