Method for extracting ricin-containing insecticidal active substance and combined application with pesticides

An insecticidal composition and technology for insecticides, which are applied in the directions of insecticides, botanical equipment and methods, applications, etc., can solve problems such as differences in biological activity, restrict the application of castor oil extracts, etc. The effect of reducing the amount of pesticide application and facilitating the popularization and application

Pending Publication Date: 2018-09-21
INST OF COTTON RES CHINESE ACAD OF AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, according to the different extraction methods of castor extract, the biological activity of castor extra

Method used

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  • Method for extracting ricin-containing insecticidal active substance and combined application with pesticides
  • Method for extracting ricin-containing insecticidal active substance and combined application with pesticides
  • Method for extracting ricin-containing insecticidal active substance and combined application with pesticides

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0027] Example 1 Extraction of castor-oil plant insecticidal substance

[0028] After 500g old castor-oil plant leaves are dried, crushed, and sieved through a 100-mesh fine sieve, the dried castor-oil plant leaves are immersed in a 50% ethanol aqueous solution according to the mass ratio of castor-oil plant tissue dry powder and ethanol aqueous solution of 1:10 Soak in a water bath at 50°C for 8 hours, and then ultrasonically shake at a water bath at 50°C for 20 minutes. After filtration, the first filtrate is obtained; the residue obtained after the first filtration is immersed in castor oil tissue with a mass concentration of 50%. In an ethanol aqueous solution with a dry powder mass ratio of 1:10, ultrasonically vibrate for 20 minutes at 50°C in a water bath, and filter to obtain a second filtrate; combine the two filtrates to obtain an extract containing castor-oil plant insecticides, and rotate at 60°C in a water bath Evaporating and concentrating the above-mentioned extrac...

Example Embodiment

[0031] Example 2 Extraction of castor-oil plant insecticidal substance

[0032] After 300g castor bean shells are dried, crushed, and sieved through a 150-mesh fine sieve, the dry castor bean leaf powder is soaked in the ethanol aqueous solution with a mass concentration of 70% according to the ratio of the mass ratio of the dry castor bean tissue powder to the ethanol aqueous solution of 1:15 Soak in a water bath at 60°C for 7 hours, and then ultrasonically vibrate in a water bath at 60°C for 15 minutes. After filtration, the first filtrate is obtained; the residue obtained after the first filtration is immersed in castor oil tissue with a mass concentration of 70%. In an ethanol aqueous solution with a dry powder mass ratio of 1:15, ultrasonically vibrate for 15 minutes at 60℃ in a water bath, and filter to obtain a second filtrate; combine the two filtrates to obtain an extract containing castor-oil plant insecticides, and rotate at 70℃ in a water bath Evaporating and concentr...

Example Embodiment

[0035] Example 3 Extraction of castor-oil plant insecticidal substance

[0036] After 600g castor bean meal is dried, crushed, and passed through an 80-mesh fine sieve, the dry castor bean leaf powder is soaked in ethanol with a mass concentration of 60% according to the mass ratio of castor bean tissue dry powder to ethanol aqueous solution of 1:20 Soak in the water bath at 60℃ for 8h, then oscillate at 60℃ for 15min with ultrasonic wave. After filtration, the first filtrate is obtained; the residue obtained after the first filtration is again immersed in castor oil with a mass concentration of 60% Tissue dry powder mass ratio of 1:20 in ethanol aqueous solution, ultrasonic vibration at 60 ℃ water bath conditions for 15 minutes, filtered to obtain the second filtrate; combine the two filtrates to obtain the extract containing castor-oil plant insecticides, at 70 ℃ water bath conditions Rotary evaporation is used to concentrate the above-mentioned extract containing the insectici...

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Abstract

The invention belongs to the field of plant protection, and relates to a pesticide composition and an application field. The invention relates to a combination of ricin insecticides and conventional insecticides, mainly used for the control of harmful arthropods in crops. The invention firstly discloses a method for extracting ricin-containing insecticidal active substance, and secondly, disclosesa ricin insecticidal substance and conventional insecticide composition and application. The ethanol solution is combined with the ultrasonic extraction to obtain the ricin insecticidal substance, and the obtained ricin insecticidal substance has a remarkable synergistic effect on a plurality of insecticides; the composition disclosed has the advantages of simple using method, convenient popularization and application, and good control effect on various target arthropods such as the cotton leaves, the spodoptera litura, the spodoptera litura, the diamondback moth, the worm, the whitefly, thealma and the leaves, and the like; the application amount of the pesticide can be reduced to a great extent, and the resistance development of the target arthropod to the pesticide can be delayed, meeting the requirements of current pesticide reduction and environmental protection.

Description

technical field [0001] The invention belongs to the field of plant protection, and relates to the field of pesticide composition and its application, in particular to an extraction method of an insecticidal active substance containing castor and its combined application with an insecticide. Background technique [0002] For the control of modern agricultural pests and diseases, although there are many emerging and environmentally friendly technologies, chemical pesticides still play a pivotal role due to factors such as cost and control effect. However, the existing pesticides also have shortcomings such as large usage, easy resistance and serious environmental pollution. These shortcomings also limit the development of the pesticide industry and agricultural production. Plant secondary metabolites can not only provide leading compounds with excellent activity for the synthesis and screening of novel pesticide molecules, but also can be directly developed into environmentall...

Claims

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Application Information

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IPC IPC(8): A01N65/18A01N57/16A01N47/24A01N53/08A01N51/00A01N43/90A01P7/02A01P7/04
CPCA01N43/90A01N47/24A01N51/00A01N57/16A01N65/18A01N65/00A01N25/30A01N57/20A01N57/12A01N57/14A01N47/22A01N47/18A01N43/40A01N47/40A01N43/22Y02A50/30
Inventor 张开心雒珺瑜崔金杰朱香镇姬继超王丽张帅张利娟王春义
Owner INST OF COTTON RES CHINESE ACAD OF AGRI SCI
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