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Juglone extracting process

A juglone, weighing technology, 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., to achieve high purity and yield, and equipment The effect of low condition requirements and flexible production schedule

Inactive Publication Date: 2007-03-21
NORTHEAST FORESTRY UNIVERSITY
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  • Summary
  • 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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specific Embodiment approach 1

[0008] Specific embodiment 1: The extraction steps in this embodiment are as follows: a. The raw material is the roots, stems, leaves, peels or peels of walnut tree pulverized to below 20 mesh; b. The raw materials are weighed, and the weight ratio of the raw materials to the solvent is 1 :1~1:1000 add the solvent, stir and soak for 0~12h; c. Distill the material after soaking under reduced pressure, and add solvent until the distillate is colorless; d. Collect the liquid distilled out 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 concentration by weight of methanol and ethanol is above 50%. Others are the same as the first embodiment.

specific Embodiment approach 3

[0010] Specific embodiment 3: This embodiment is different from the first embodiment in that ultrasonic immersion is used in step b, the power of the ultrasonic wave is 50 to 1000 W, and the temperature of the ultrasonic wave is 0 to 50°C. Other and specific

[0011] The first embodiment is the same.

[0012] The ultrasonic wave used in this embodiment can shorten the soaking time to 0-10 min.

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Abstract

The juglone extracting process includes the following steps: 1. crushing the root, stem, leaf, bark or pericarp of Juglans mandshurica as the material to below 20 mesh; 2. soaking the material in solvent of 1 to 1000 times weight through stirring for 0-12 hr; 3. distilling the soaked material under reduced pressure while replenishing solvent to obtain colorless distillate; 4. separating out the product physically from the distillate and drying to obtain juglone-containing product. The present invention has simple process, short production period, low cost, high product purity and yield, and other advantages.

Description

Technical field [0001] The invention relates to an extraction method. technical background [0002] Juglaquinone (5-hydroxy-1,4-naphthoquinone) is a naphthoquinone active substance extracted and isolated from Juglans mandshurica Maxim. It can inhibit the growth of tumor cells and can directly kill tumor cells. Inhibit the germination of spores such as willow leaf rust, poplar rot, arborvitae blight, larch and poplar rust, and at the same time prevent rice blast, rice sheath blight, cotton wilt, cucumber vine cut disease, eggplant brown streak The growth of the hyphae of the disease and Verticillium dahliae of eggplant also has a significant inhibitory effect. In addition, juglone can also inhibit the growth and development of other plants and has a good allelopathy. [0003] Jugquinone has a variety of biological activities, so it has a very broad application prospects in medicine and agriculture and forestry. Its extraction and preparation are attracting more and more researcher...

Claims

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Application Information

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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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