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Ligularia virgaurea extract insecticide and preparation method thereof

An extract and pesticide technology, applied in the field of biological pesticides and their preparation, can solve the problems of low degree of industrialization, single effective formulation, high product cost, and achieve fast insecticidal speed, good extension and adhesion ability, good stability

Active Publication Date: 2015-02-11
GANSU ACAD OF SCI INST OF BIOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, after more than half a century of development, my country's botanical insecticide products account for less than 5% of all pesticides, and there is a huge gap with other pesticide industries. The main problems are resource shortages, high product costs, and effective There are many problems such as single dosage form and low degree of industrialization

Method used

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  • Ligularia virgaurea extract insecticide and preparation method thereof
  • Ligularia virgaurea extract insecticide and preparation method thereof
  • Ligularia virgaurea extract insecticide and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-15

[0025] Example 1-15: Preparation of insecticidal suspoemulsion of Ligularia fruticosa extract

[0026] See Table 1 for the proportioning amount of the insecticidal suspoemulsion of the extract of Ligularia japonica in Examples 1-5, and see Table 2 for the proportioning amount of the insecticidal suspoemulsion of the extract of Ligonia chrysanthemum in Examples 6-10. See Table 3 for the ratio of the insecticidal suspoemulsion of the extract of Ligularia chinensis in 11-15.

[0027]The preparation of the main drug is as follows: the whole herb of Ligularia chinensis collected after the frost falls, washed with water to remove dust, killed at 110°C for 10 minutes, then dried in the air, crushed, and passed through a 20-mesh sieve to obtain the crushed whole plant of Ligularia chinensis; Weighing, using 95% ethanol as the extraction solvent is 95% ethanol, extracting active ingredients, pulverized matter and extraction solvent are placed in a stoppered round-bottomed flask at a ...

Embodiment 16-29

[0032] Example 16-29: Preparation of insecticidal microcapsules of Ligularia pratense extract

[0033] See Table 4 for the ratio of the insecticidal microcapsules of the extract of Ligularia chrysanthemum in Examples 16-20, and see Table 5 for the ratio of the insecticidal microcapsules of the extract of Ligia chrysanthemum in Examples 21-25. See Table 6 for the ratio of insecticidal microcapsules of the extract of Ligularia chinensis in 26-29.

[0034] The preparation of the main drug is as follows: the whole herb of Ligularia chinensis collected after the frost falls, washed with water to remove dust, killed at 110°C for 10 minutes, then dried in the air, crushed, and passed through a 20-mesh sieve to obtain the crushed whole plant of Ligularia chinensis; Weigh, use 90% ethanol as the extraction solvent, extract the active ingredients, put the pulverized product and the extraction solvent in a stoppered round bottom flask at a ratio of 1:1 (W / V), soak for 24 hours at room ...

Embodiment 30

[0036] Example 30: Preparation of insecticidal microcapsules from the extract of Ligularia pratense

[0037] See Table 6 for the ratio of the insecticidal microcapsules of the extract of Ligularia pratense in Example 30. Preparation of the main ingredient: the difference from Example 16 is that the extraction solvent is 80% methanol.

[0038]

[0039]

[0040]

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Abstract

The invention discloses Ligularia virgaurea extract insecticide and a preparation method thereof. The Ligularia virgaurea extract insecticide is prepared from a main chemical and assistants, wherein the main chemical is a Ligularia virgaurea extract compound, and the volume content of terpenes and alkaloids compounds is 86.3%; the Ligularia virgaurea extract insecticide is in dosage forms of suspoemulsion and microcapsule; the suspoemulsion is prepared from the following ingredients in weight percentage: 50-75% of main chemical, 3.0-10% of emulsifier, 0.1-5.0% of dispersing agent, 0.2-5.0% of thickening agent, 2.0-8.0% of anti-freezing agent, 0.1-5.0% of preservative, 0.2-5.0% of defoaming agent and the balance of water. The microcapsule is prepared from the following ingredients in weight percentage: 80-86% of main drug, 13.0-19.9% of capsule wall material, 0.1-1.0% of lubricating agent, curing agent which is 10 times of the total amount of the prepared ingredients in volume dose, and diluent which is 10.0-15.0 times of the total amount in volume dose, wherein the pH value of the capsule formation system is regulated to be 4.0-4.5 by a capsule formation agent. The biological insecticide has good prevention and control effect on various crop pests, and is safe to people and livestock, environment and natural enemy.

Description

technical field [0001] The invention belongs to the field of botanical biopesticides, and specifically relates to a biopesticide using the poisonous plant Ligula sativa as a raw material and a preparation method thereof. Background technique [0002] In the past ten years, due to the adjustment of planting structure, global climate change and the abuse of various chemical pesticides, crop diseases, insect pests and weeds have increased year by year, causing great harm to agricultural production. As the main means of plant pest control, chemical pesticides have played a very important role, but the extensive use of chemical pesticides poses an irreversible threat to the ecological environment and human health. Therefore, it is imperative to develop new pesticides that are environmentally friendly, safe and efficient. [0003] Botanical insecticides are more and more valued in the field of plant protection in the plant pest control system due to their various modes of action, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N65/12A01P7/04
CPCY02A50/30
Inventor 刘锦霞李晶李娜丁品杜文静张建军柳军玺邸多隆武建荣
Owner GANSU ACAD OF SCI INST OF BIOLOGY
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