Botanical pesticide compound phytolacca acinosa and magnolia officinalis microemulsion and preparation method thereof

A technology of botanical pesticides and microemulsions, applied in botany equipment and methods, plant growth regulators, biocides, etc., can solve problems that do not meet environmental protection, health, affect tobacco leaf quality, and human health hazards, and achieve operational Safe and feasible, fast action speed, and stable production process

Inactive Publication Date: 2015-09-09
HUBEI UNIV OF CHINESE MEDICINE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the control of tobacco red spot disease in my country is relatively poor, and a satisfactory disease-resistant variety system has not been established and effective control agents have not been developed. Commonly used are chemical pesticides that are easy to pollute the environment, directly poison non-target organisms, and

Method used

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  • Botanical pesticide compound phytolacca acinosa and magnolia officinalis microemulsion and preparation method thereof
  • Botanical pesticide compound phytolacca acinosa and magnolia officinalis microemulsion and preparation method thereof
  • Botanical pesticide compound phytolacca acinosa and magnolia officinalis microemulsion and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0022] Preparation of Phytophthora saponins: Weigh 10Kg of pulverized Phytophthora root coarse powder, soak and extract 3 times with 70% ethanol solution (volume concentration) of 8 mass times, each extraction for 24h, combine the extracts, filter, and concentrate to obtain Extract, disperse the extract in water of equal quality and heat it to fully dissolve to obtain an aqueous solution. The heating temperature is 80°C. Filter the aqueous solution while it is hot and extract it with n-butanol. Minutes, let it stand overnight, filter to remove activated carbon residue, collect the filtrate, and evaporate to dryness to obtain pokeweed total saponins.

[0023] Preparation of Magnolia Bark Extract: Take Magnolia Bark Powder 10Kg, extract 3 times with 6 times the amount of 65% ethanol solution, extract for 2 hours each time, concentrate the extract to a relative density of 1.2, add an equal volume of 2% NaOH Adjust the pH value of the solution to 10-11, filter after standing for 2...

Embodiment 2

[0027] Preparation of total saponins of Phytophthora saponins: Weigh 10Kg of pulverized Phytophthora root coarse powder, extract once with 50% ethanol solution 5 times by mass, extract for 30 hours, combine the extracts and filter, concentrate to obtain extract, extract Disperse in water of equal mass and heat to fully dissolve to obtain an aqueous solution. The heating temperature is 70°C. Filter the aqueous solution while it is hot and extract it with n-butanol. Combine the n-butanol extracts, add 10 g of activated carbon, heat and reflux for about 5 minutes, and let stand overnight. Remove activated carbon residues by filtration, collect the filtrate, and evaporate to dryness to obtain pokeweed total saponins.

[0028] Preparation of magnolia bark extract: Weigh 10Kg of magnolia bark powder, extract once with 50% ethanol solution of 5 mass times, extract for 3 hours, concentrate the extract to a relative density of 1.1, add an equal volume of 2wt% NaOH solution Adjust the p...

Embodiment 3

[0032]Preparation of total saponins of Phytophthora saponins: Weigh 10Kg of pulverized Phytophthora root coarse powder, extract 4 times with 95% ethanol solution of 10 mass times, each extraction for 10h, combine the extracts and filter, concentrate to obtain extract, and Disperse the extract in water of equal quality and heat it to fully dissolve to obtain an aqueous solution. The heating temperature is 60°C. Filter the aqueous solution while it is hot and extract it with n-butanol. Combine the n-butanol extract, add 100g of activated carbon, heat and reflux for about 30 minutes, and let stand Overnight, filter to remove activated carbon residues, collect the filtrate, and evaporate to dryness to obtain pokeweed total saponins.

[0033] Preparation of Magnolia officinalis extract: Weigh 10Kg of Magnolia bark powder, extract 4 times with 10 mass times of 95% ethanol solution, extract for 1 hour each time, concentrate the extract to a relative density of 1.3, add an equal volume...

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Abstract

The invention relates to botanical pesticide compound phytolacca acinosa and magnolia officinalis microemulsion and a preparation method thereof. The microemulsion is prepared from, by weight, 0.5-5% of total saponins of phytolacca acinosa, 0.5-5% of magnolia officinalis extracts, 1-10% of xanthium sibiricum extracts, 5-15% of calcium dodecylben-zenesulfonate, 8-20% of styrylphenol polyoxyethylene ether, 10-25% of cyclohexanone and 20-75% of water. The preparation method includes: uniformly mixing the total saponins of phytolacca acinosa, the magnolia officinalis extracts and the xanthium sibiricum extracts, adding the calcium dodecylben-zenesulfonate, the styrylphenol polyoxyethylene ether and the cyclohexanone, uniformly stirring to prepare oil phase, adding water for diluting, and stirring to obtain homogeneous-phase O/W emulsion. Since main ingredients of the microemulsion are pure natural traditional Chinese medicines, the microemulsion is safe to human and livestock, less prone to causing drug resistance of insects and germs and easy to degrade and complies with the requirements of agricultural sustainable development and human physical health, thereby being an environment-friendly botanical pesticide preparation.

Description

technical field [0001] The invention relates to the field of pesticide preparations, in particular to a botanical pesticide compound lupus microemulsion and a preparation method thereof. Background technique [0002] Ecological tobacco leaves are the basic guarantee for reducing tar and harm in the tobacco industry and creating "Chinese-style cigarettes" with Chinese characteristics. At present, there are as many as 68 kinds of tobacco infectious diseases in my country, among which tobacco red spot disease is caused by the infection of tobacco by Alternaria spp., which is a common and serious disease in tobacco leaves. At present, the control of tobacco red spot disease in my country is relatively poor, and a satisfactory disease-resistant variety system has not been established and effective control agents have not been developed. Commonly used are chemical pesticides that are easy to pollute the environment, directly poison non-target organisms, and easily produce resistan...

Claims

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Application Information

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IPC IPC(8): A01N65/12A01N25/04A01P3/00A01P7/04
Inventor 卢金清江汉美郭胜男
Owner HUBEI UNIV OF CHINESE MEDICINE
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