Duranta repens Linn. bactericidal aqueous emulsion and preparation method thereof

A technology of false forsythia and water emulsion, which is applied in the field of pesticides to achieve remarkable protection effects, suitable for use and promotion, and simple extraction methods

Inactive Publication Date: 2013-01-23
SPICE & BEVERAGE RES INST CHINESE ACAD OF TROPICAL AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, so far, there has been no report on the manufacture of botanical fungicides using the pseudo-forsythia plant as a raw material

Method used

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  • Duranta repens Linn. bactericidal aqueous emulsion and preparation method thereof
  • Duranta repens Linn. bactericidal aqueous emulsion and preparation method thereof
  • Duranta repens Linn. bactericidal aqueous emulsion and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Example 1 Preparation of False Forsythia Extract

[0032] Take fresh False Forsythia from the Institute of Spices and Beverages of the Chinese Academy of Tropical Agricultural Sciences, take its stems, leaves, flowers or fruits, dry at room temperature for 5-10 days, and then put them in a constant temperature oven at 55-60°C to dry until the water content reaches If it is less than 10%, pulverize, pass through a 60-mesh sieve, add about 10 times the amount (W / V) of solvent, repeat the extraction 3 times, combine the extracts, dry and concentrate under reduced pressure to obtain the extract of False Forsythia extract.

[0033] The above raw materials can also be mixed with multiple stems, leaves, flowers and fruits of False Forsythia.

[0034] 1.1 Selection of extraction solvent

[0035] Accurately weigh 6 parts of equal weight False Forsythia dry powder sample, add respectively acetone, ethyl acetate, absolute ethanol, methyl alcohol, ethyl acetate and absolute ethano...

Embodiment 2

[0045] The False Forsythia extract prepared in Example 1 is used to prepare False Forsythia sterilizing aqueous emulsion, the process is as follows:

[0046] a, take each component (percentage by weight) according to the formula: 10% of False Forsythia extract, 10% of cyclohexane, 5% of sodium sulfonate, 5% of butanol, and the balance is water;

[0047] b. Add the extract of Forsythia japonicus into cyclohexane and stir to make an oil phase liquid for use;

[0048] c. Mix sodium sulfonate, butanol and water evenly, and slowly add the oil phase liquid in step b to the water phase under stirring, stop stirring at room temperature for 1 hour, and let it stand for 1 hour to obtain the false forsythia bactericidal water emulsion .

Embodiment 3

[0050] The False Forsythia extract prepared in Example 1 is used to prepare False Forsythia sterilizing aqueous emulsion, the process is as follows:

[0051] a, take each component (percentage by weight) according to the formula: False Forsythia extract 50%, ethylene glycol 5%, castor oil oxyethylene ether 10% and 1% dodecanol-1, balance for water;

[0052] b. Add the extract of False Forsythia to ethylene glycol and stir to make an oil phase liquid for use;

[0053] c. Mix castor oil ethylene oxide ether, dodecanol-1 and water evenly, and slowly add the oil phase liquid in step b to the water phase under stirring, stop stirring at room temperature for 1 hour, and let stand for 1 hour , that is, false forsythia bactericidal water emulsion.

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Abstract

The invention discloses a Duranta repens Linn. bactericidal aqueous emulsion. The aqueous emulsion comprises the following components by weight percent: 10-50% of Duranta repens Linn. extract, 5-10% of solvent, 5-10% of emulsifier, 1-5% of co-emulsifier and the balance water. The preparation method of the Duranta repens Linn. bactericidal aqueous emulsion uses the stems, leaves, flowers or fruitsof Duranta repens Linn. as raw material, and comprises the following steps: using organic solvent to extract the Duranta repens Linn. extract and mixing the extract with solvent, emulsifier, co-emulsifier and water to prepare the Duranta repens Linn. bactericidal aqueous emulsion. When using the Duranta repens Linn. bactericidal aqueous emulsion of the invention, water is added in the Duranta repens Linn. bactericidal aqueous emulsion and the dilute aqueous emulsion is sprayed on the leaves of crops or poured at the boots of crops so that the aqueous emulsion is convenient to use; and the aqueous emulsion has better control effect on the main diseases of various tropical cash crops and also has prominent protection effect on Phytophthora capsici. The active ingredient of the preparation is natural material, is non-toxic to human and livestock, has no residue and is safe relative to the nontarget organism; and the processing technology is simple, the raw material is accessible, the cost is low, the product corresponds to the current pesticide development direction and has good development and application potentiality.

Description

technical field [0001] The invention relates to a pesticide, especially a bactericidal aqueous emulsion of pseudo-forsythia, and a preparation method of the aqueous emulsion. Background technique [0002] At present, as people's ability to research and develop plants is gradually strengthened, it is a research trend in the international development of pesticides to find natural active substances from plants and use them for pest control. According to statistics, there are at least 500,000 different species of plants in the world, including 11,020 species of medicinal plants (including 1,208 subspecies), belonging to 2,313 genera and 383 species. Up to now, 2,400 higher plants with the activity of controlling harmful organisms have been reported. There are more than 1,000 species with insecticidal activity, 94 species with antifungal properties, 11 species with antibacterial properties, and 17 species with antiviral properties. [0003] False forsythia (Duranta repens Linn.)...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01N65/08A01P3/00
Inventor 孙世伟谭乐和苟亚峰刘爱勤冯岗张静
Owner SPICE & BEVERAGE RES INST CHINESE ACAD OF TROPICAL AGRI SCI
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