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Uses of protopine total alkaloids in agricultural pesticide

A technology of total alkaloids and fungicides, applied in the field of alkaloids, can solve the problems such as the alkaloids of the pteroides that have not yet been seen, and achieve the effect of good effect and low residue.

Active Publication Date: 2009-04-08
曾建国
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It has not yet been seen that the application of the alkaloids extracted from these plants to fungicides and pesticides

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] Boluohui fruit pods 2kg, dried at 55°C, crushed, soaked twice with 1% HCl aqueous solution at 80°C with 20 times the amount, 5 hours each time, to obtain acidic water extract, and then adjusted pH with 10% NaOH aqueous solution To 9, the precipitate was separated, and the precipitate was extracted twice with 10 times of 90% industrial ethanol under reflux, each time for 1 hour, and the extract was extracted with 10% H 2 SO 4 Adjust the pH of the aqueous solution to 1-2, filter, adjust the filtrate to neutral with 10% NaOH aqueous solution, concentrate until it has no alcohol smell, then dissolve it with dilute acid solution, then adjust the pH to 9-10 with NaOH, filter and dry the precipitate to obtain Putuo class total alkaloid plant extract. The total alkaloid content of Putuo class was determined by HPLC to be about 70.8%, among which protopine was about 45.3%, and allocryptine was about 24.5%.

Embodiment 2

[0050] 5 kg of celandine whole herb, dried at 60°C, crushed, extracted twice with 15 times the amount of 2% HCl water at 80°C, 1 hour each time, and saturated with Ca(OH) 2 Adjust the pH of the aqueous solution to 9, filter the supernatant, take the supernatant and absorb it with a macroporous resin, first elute with 10% ethanol, then use 70% ethanol gradient elution, collect 70% eluate, and evaporate to dryness under reduced pressure , dried at room temperature, and the eluate was extracted with ethyl acetate to obtain the total alkaloid plant extract of the class of Putuo, and the total alkaloid content of the class of Putuo was determined by HPLC to be about 74.5%, and the content of the original opium was about 34.2%. Cryptopine content is 40.3%.

Embodiment 3

[0052] 5kg of the whole herb of blood water grass, dried at 60°C, crushed, extracted twice with 15 times the amount of 2% sulfuric acid aqueous solution at 80°C, each time for 1 hour, with saturated Ca(OH) 2 The pH of the aqueous solution was adjusted to 9, and the supernatant was obtained by filtration. The supernatant was absorbed by a macroporous resin, eluted with 10% ethanol solution, and then eluted with 90% ethanol. The 90% eluate was evaporated to dryness under reduced pressure, and the Dried, the eluate was extracted with ethyl acetate to obtain the total alkaloid plant extract of the class of Putuo, and the total alkaloid content of the class of Putuo was determined by HPLC to be about 64.6%, wherein the content of the original opium was about 26.1%, and the content of allocryptine The content is 38.5%.

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Abstract

The invention provides an application of protopine total alkaloids in pesticide bactericide, which uses the protopine total alkaloids that are extracted and separated from natural plants as a main effective constituent in the aspect of pesticide bactericide. An inventor uses the protopine total alkaloids separately or compounds the protopine total alkaloids with other active constituents, and processes the protopine total alkaloids into wettable powder, emulsifiable solutions, suspending agents, water dispersible granules, emulsions in water and other dosage forms having good effects in the aspect of bactericide by a preparation method.

Description

technical field [0001] The invention relates to a class of alkaloids with antibacterial properties extracted from natural plants, which have good applications in the prevention and control of crop diseases. This type of alkaloids is mainly protopine alkaloids, mainly represented by protopine and allocryptopine. technical background: [0002] According to the statistics of the Food and Agriculture Organization of the United Nations (FAO), the loss of world grain production due to pests and diseases accounts for about 12% of the total output every year, and the annual loss reaches 120 billion US dollars, which is equivalent to 1 / 2 of China's total agricultural output value and 1 / 3 of that of the United States. 3. It is 2 times that of Japan and more than 4 times that of the United Kingdom. In our country, 15% of crops are lost every year due to pest damage, including 3.5 million tons of grain, 900,000 tons of cotton, 28 million tons of vegetables, and 3 million tons of fruits...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N65/00A01N43/90A01P3/00
Inventor 曾建国
Owner 曾建国
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