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Application of swainsonine and method for extracting swainsonine from industrial hemp

A technology of swaintonin and industrial hemp, which is applied in the field of natural medicinal chemistry, that is, biopesticides, can solve the problems of unfavorable growth of crops and high cost of plant essential oil raw materials, and achieve excellent repellent effects

Pending Publication Date: 2022-03-08
HUNAN AGRI BIOTECH RES CENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The formula contains solvents and emulsifiers, which are still unfavorable to the growth of crops in use; and the raw material cost of plant essential oils is very high

Method used

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  • Application of swainsonine and method for extracting swainsonine from industrial hemp
  • Application of swainsonine and method for extracting swainsonine from industrial hemp
  • Application of swainsonine and method for extracting swainsonine from industrial hemp

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Embodiment 1

[0034] Embodiment 1 extracts swainsonine from industrial hemp

[0035] S1, 1000g of dried flowers and leaves of industrial hemp (half of the female and half of the male plant) are pulverized by a pulverizer, and after passing through a 40-60 mesh sieve, soak for 3 days with 10L of ethyl acetate, stirring 4-5 times during the period, so that the soaking is sufficient; filter Remove the residue and collect the ethyl acetate extract;

[0036] S2, rotating the ethyl acetate extract in a water bath at a temperature of 50°C to obtain an extract;

[0037] S3, fully dissolve the extract with 0.5-2mol / L hydrochloric acid solution, then pass through 001×7 strong acidic cation exchange resin, elute with deionized water and 0.5-2mol / L ammonium hydroxide solution respectively, and collect the The ammonium solution eluate was dried in a freeze dryer to obtain a dried product;

[0038] S4, pass the dried product obtained in step S3 through silica gel column chromatography, elute with chlor...

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Abstract

The invention provides application of swainsonine, and the swainsonine is used as a plant hopper repellent for preventing and controlling plant hoppers of crops, so that the crops can be protected from being damaged by the plant hoppers. The inventor shows that swainsonine has an excellent repelling effect on plant hoppers through a large number of indoor biological activity tests, particularly on rice brown plant hoppers, and field tests show that after the swainsonine is sprayed to the rice, the harm of the brown plant hoppers, laodelphax striatellus and sogatella furcifera to the rice can be obviously inhibited. The invention provides a new method for using swainsonine, and also provides a green, safe and efficient new repellent for preventing and controlling plant hoppers of crops. The invention further provides a method for extracting swainsonine from industrial cannabis sativa, the swainsonine can be effectively extracted through the method, the raw material source of the swainsonine is widened, meanwhile, the utilization range of the industrial cannabis sativa is widened, and a new thought and a new method are provided for a new plant protection technology.

Description

technical field [0001] The invention relates to the technical field of natural medicinal chemistry, that is, biopesticides, in particular to a plant-based repellent for preventing planthoppers, which can protect crops from planthoppers, and more specifically, to the application and industrial use of swainsonine. Method for extracting swainsonine from cannabis. Background technique [0002] Insect repellants are active chemical substances produced by plants or artificially synthesized to repel insects. Plant-based pest repellents produce natural resistance to pests, and manifest themselves as killing, repelling, refusal, or inhibiting the normal growth and development of pests. Planthoppers belong to the family Planthoppers of the order Hemiptera, and there are more than 200 species in my country. The common ones are brown planthopper, gray planthopper, white-backed planthopper, etc. Some species also spread plant virus diseases, such as rice black-streaked dwarf, wheat bush...

Claims

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Application Information

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IPC IPC(8): A01N43/90C07D471/04A01P17/00
CPCA01N43/90C07D471/04
Inventor 邬腊梅柏连阳周小毛杨浩娜王立峰刘佳邓希乐
Owner HUNAN AGRI BIOTECH RES CENT
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