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Juglone extracting process

A technology of juglone and physical methods, applied in quinone separation/purification, organic chemistry, etc., can solve the problems of low extract yield, low extract purity, complex extraction and separation methods, etc., achieve high purity and yield, and equipment The effect of low condition requirements and flexible production schedule

Inactive Publication Date: 2009-10-14
NORTHEAST FORESTRY UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a method for extracting juglone in order to solve the problems of complex extraction and separation methods, low extract purity and low extract yield in the prior art

Method used

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  • Juglone extracting process
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  • Juglone extracting process

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specific Embodiment approach 1

[0008] Specific embodiment one: the step that the present embodiment extracts is as follows: a, raw material is the root, stem, leaf, skin or pericarp of Chinese catalpa to be pulverized to below 20 orders; B, take raw material, be 1 by raw material and solvent weight ratio : Add solvent in a ratio of 1 to 1: 1000, stir, and soak for 0 to 12 hours; c, vacuum distill the soaked material, and add solvent until the distillate is colorless; d, collect the liquid distilled in step c, The product is separated by physical methods, and then the product is dried; that is, a product containing juglone is obtained.

specific Embodiment approach 2

[0009] Embodiment 2: The solvent in step b of this embodiment is methanol, ethanol or distilled water, and the weight percent concentration of methanol and ethanol is above 50%. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0010] Embodiment 3: This embodiment differs from Embodiment 1 in that ultrasonic soaking is used in step b, the power of the ultrasonic wave is 50-1000w, and the temperature of the ultrasonic wave is 0-50°C. Others are the same as in the first embodiment.

[0011] The ultrasonic wave adopted in this embodiment can shorten the soaking time to 0-10 minutes.

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Abstract

A method for extracting juglone, relating to an extraction method. The present invention solves the problems of complex extraction and separation methods, low extract purity and low extract yield in the prior art, and the extraction steps are as follows: a, the raw material is the root, stem, leaf, skin or pericarp of Juglans catalpa Pulverize to below 20 mesh; b, weigh the raw material, add water according to the weight ratio of raw material and water in the ratio of 1: 1 to 1: 1000, stir, and soak for 0 to 12 hours; c, carry out vacuum distillation on the soaked material, and add Add water until the distillate is colorless; d. Collect the liquid distilled in step c, separate the product by physical methods, and then dry the product; that is, a product containing juglone is obtained. The invention has the advantages of low equipment requirement, easy implementation, simple steps, short production cycle, flexible arrangement of production schedule, low production cost, economic reliability and high extract purity and yield.

Description

technical field [0001] The present invention relates to an extraction method. technical background [0002] Juglone (5-hydroxyl-1,4-naphthoquinone) is a kind of naphthoquinone active substance extracted from Juglans mandshurica Maxim, which can inhibit the growth of tumor cells and directly kill tumor cells. Inhibit the germination of spores such as willow leaf rust, poplar skin rot, arborvitae deadwood, larch poplar rust, etc. The growth of hyphae of Verticillium dahliae and eggplant Verticillium dahliae also had obvious inhibitory effect. In addition, juglone can also inhibit the growth and development of other plants, and has a good allelopathic effect. [0003] The various biological activities of juglone make it have a very wide application prospect in medicine, agriculture and forestry, etc. Its extraction and preparation are attracting more and more researchers. Scholars at home and abroad have successively separated and purified juglone from natural products. In 1...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C46/10C07C50/32
Inventor 孙墨珑李淑君袁海舰宋湛谦方桂珍刘志明刘毓琪
Owner NORTHEAST FORESTRY UNIVERSITY
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