Method for preparing green insecticide from walnut green seedcase

A green insecticide, walnut green husk technology, applied in the directions of insecticides, botanical equipment and methods, biocides, etc., can solve the problem of less walnut green husk and other problems, achieve high productivity, simple operation methods, meet environmental protection and industrialization requirements. desired effect

Inactive Publication Date: 2017-05-10
JINAN HUALU FOOD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, it is particularly important to develop environmentally friendly pesticides including botanical pesticides, but there are fewer reports about walnut green husks in the

Method used

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  • Method for preparing green insecticide from walnut green seedcase
  • Method for preparing green insecticide from walnut green seedcase

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] (1). Preparation of walnut green skin dry powder: After fresh walnuts are peeled by a peeling machine, they are dried at low temperature. In order to prevent the reduction of the content of the active ingredients of Qingpi, especially the content of juglone, the drying temperature is controlled at 50°C;

[0022] (2). Extraction: Take 1 kg of green walnut skin, break it into pieces, soak it with 5 kg of 95% ethanol for 3 times at room temperature, combine the extracts, and concentrate to obtain the crude ethanol extract for later use;

[0023] (3). Purification: Dissolve the crude extract in ethanol, take 20 parts by mass of the crude extract as macroporous resin DM101 for purification, prepare ethanol and aqueous solution at a ratio of 30:70 as eluent, and collect low-polarity The material part is concentrated, dried, powdered, and passed through a 60-mesh sieve for later use;

[0024] (4). Preparation: Take 100 g of dry extract powder, dissolve it with 5 g of 5% ethan...

Embodiment 2

[0026] (1). Preparation of walnut green skin dry powder: After fresh walnuts are peeled by a peeling machine, they are dried at low temperature. In order to prevent the reduction of the content of green peel active ingredients, especially juglone, the drying temperature is controlled below 40°C;

[0027] (2). Extraction: Take 1 kg of green walnut peel, break it into pieces, soak it with 7 kg of 95% ethanol for 3 times at room temperature, combine the extracts, and concentrate to obtain the crude ethanol extract for later use;

[0028] (3). Purification: Dissolve the crude extract in ethanol, take 20 mass parts of the crude extract with macroporous resin (DM101, AB-8, etc.) Elution, collect low-polarity material parts, concentrate, dry, powder, and pass through a 60-mesh sieve for later use;

[0029] (4). Preparation: Take 100 g of dry extract powder, dissolve it in 10 g of 5% ethanol, then add 1 g of diacetyl tartrate monoglyceride emulsifier and penetrant, and finally dilute...

Embodiment 3

[0031] (1). Preparation of walnut green skin dry powder: After fresh walnuts are peeled by a peeling machine, they are dried at low temperature. In order to prevent the reduction of the active ingredients of Qingpi, especially the content of juglone, the drying temperature should be controlled below 45°C;

[0032] (2). Extraction: Take 1 kg of green walnut skin, break it into pieces, soak it with 6 kg of 95% ethanol for 3 times at room temperature, combine the extracts, and concentrate to obtain crude ethanol extract for later use;

[0033] (3). Purification: the crude extract is dissolved in ethanol, and 20 parts by mass of the crude extract is purified with macroporous resin AB-8. The eluent is ethanol and aqueous solution in a ratio of 10:90, and the parts with low polarity are collected , concentrated, dried, powdered, and passed through a 60-mesh sieve for subsequent use;

[0034] (4). Preparation: Take 100 g of dry extract powder, dissolve it with 5 g of 5% ethanol, the...

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Abstract

The invention discloses a method for preparing a green insecticide from walnut green seedcase. The method comprises steps as follows: walnut green seedcase dry powder is prepared by dehulling and drying walnut green seedcase, a walnut green seedcase crude extracting solution is extracted through ethanol soaking, crude extract dry powder is dissolved with ethanol and purified with macroporous resin, a walnut green seedcase extract technical solution is prepared by adding an emulsifier and a penetrant, an extract preparation is prepared through ethanol dissolution and the like. Compared with the prior art, the method has the advantages that an ethanol single solvent is used for extraction, the operation method is easy and convenient, and no chemical pollution is caused. As for the main raw material for preparation, walnut is a rich resource in China, and the green seedcase is turned from waste into wealth, so that the ecological environment is protected; juglone in the walnut green seedcase has a huge function on insect resistance and bacteriostasis, and the win-win effect about social benefits and economic benefits are realized. Tests show that the walnut extract diluted by 50% has the effect same as a 40% phoxim emulsifiable concentrate solution diluted by 500 times in the aspect of the control rate on Chinese chive maggot larva.

Description

technical field [0001] The invention relates to a method for extracting juglone, more particularly, to a supercritical extraction method for natural active ingredient juglone. Background technique [0002] Walnut( Juglans regia L. ) belongs to the Juglandaceae (Juglandaceae) Jugland genus ( Juglans L. ), is one of the highest economic value in the walnut plant. Walnut is rich in resources in our country and has significant economic benefits and medicinal value. During the walnut harvest season in August and September every year, a large amount of walnut exocarp, that is, walnut green peel, is produced. Due to the strong alkalinity of walnut green peel, it can neither be used as feed nor directly used as fertilizer. Farmers and some traders often use it at will. Stacked in the fields, fields, roadsides or ditches; once it rains or the green walnuts are soaked in water, a large amount of alkaline brown wastewater will be produced, polluting the soil and waters around the w...

Claims

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Application Information

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IPC IPC(8): A01N65/08A01P7/00A01P7/04A01P1/00
CPCA01N65/00A01N65/08A01N2300/00
Inventor 刘克胜孙金月刘超刘冰胡彬
Owner JINAN HUALU FOOD
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