Method for separating and purifying juglone in walnut shells

A technology for separation and purification of walnut shells, applied in quinone separation/purification, organic chemistry and other directions, can solve the problems of low value and utilization rate of walnut shells, waste of walnut shells, etc. Simple and feasible route

Pending Publication Date: 2021-09-21
LULIANG UNIV
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0005] Aiming at the deficiencies in the prior art, the present invention provides a method for the separation and purification of juglone in walnut shells. After people eat walnut kernels, they will directly discard the walnut shells, and most of the walnut shells are used as waste. Waste caused by waste, low value and utilization of walnut shells

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  • Method for separating and purifying juglone in walnut shells

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Embodiment 1

[0027] The embodiment of the present invention provides the method for separating and purifying juglone in walnut shells, the method for separating and purifying juglone in walnut shells comprises the following steps:

[0028] S1. After the walnut shells are cleaned and dried, they are pulverized by a pulverizer and passed through a 40-mesh sieve;

[0029] S2, get 20g of walnut shell powder, place in steam explosion apparatus, steam explosion pressure is 1.0MPa, time is 5min, carry out pretreatment, steam explosion apparatus is a kind of small-sized air explosion machine, can combine the raw material in the container with high pressure The steam hangs in the atmospheric space in the form of explosion in the range of milliseconds. This process not only utilizes the high-pressure potential energy of the steam, but more importantly, converts the internal energy of the steam into mechanical energy, and realizes the work of adiabatic expansion. Due to its short action time, high en...

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Abstract

The invention provides a method for separating and purifying juglone in walnut shells, wherein the method for separating and purifying juglone in the walnut shells comprises the following steps: S1, cleaning and drying the walnut shells, crushing the walnut shells by a crusher, and sieving the crushed walnut shells; S2, taking 20 g of walnut shell powder, placing in a steam explosion instrument, and pretreating; and S3, adding the walnut shell powder pretreated in the S2 into a solvent, and performing ultrasonic extraction at normal temperature, completely dissolving organic substances in the walnut shell powder into the solvent to obtain a mixed extracting solution. According to the method, the walnut shells are firstly crushed into the walnut shell powder, then purified crystals are obtained through the methods of steam explosion pretreatment, ultrasonic extraction and column chromatography purification, the process route is simple and feasible, juglone can be effectively extracted, separated and purified from the walnut shells, the product yield can reach 0.2% or above, waste utilization is facilitated, and the problem of ecological environment pollution caused by waste of a large number of walnut shells is avoided.

Description

technical field [0001] The invention relates to the technical field of separation and purification of juglone, in particular to a method for separation and purification of juglone in walnut shells. Background technique [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 mor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C50/32C07C46/10
CPCC07C46/10C07C50/32
Inventor 张利军
Owner LULIANG UNIV
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