Duranta repens Linn. bactericidal aqueous emulsion and preparation method thereof

A technology of false forsythia and water emulsion, applied in the field of pesticides, to achieve the effects of easy availability of raw materials, suitable use and promotion, and simple manufacturing process

Inactive Publication Date: 2010-10-06
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 bot

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
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Example Embodiment

[0031] Example 1 Preparation of False Forsythia Suspense Extract

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

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

[0034] 1.1 Selection of extraction solvent

[0035] Accurately weigh 6 parts of dry powder samples of pseudoforsythia with equal weight, and add 10 times (W / V) of acetone, ethyl acetate, absolute ethanol, methanol, ethyl acet...

Example Embodiment

[0044] Example 2

[0045] The pseudo-Forsythia suspensa extract prepared in Example 1 was used to prepare a pseudo-Forsythia suspensoid sterilized water emulsion, and the process was as follows:

[0046] a. Weigh each component according to the formula (weight percentage): pseudo Forsythia suspensa extract 10%, cyclohexane 10%, sodium sulfonate 5%, butanol 5%, and the balance is water;

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

[0048] c. Mix the sodium sulfonate, butanol and water evenly. Under stirring, slowly add the oil phase liquid in step b to the water phase, stirring at room temperature for 1 hour and then stopping, and letting it stand for 1 hour to obtain pseudoforsythia antiseptic water emulsion .

Example Embodiment

[0049] Example 3

[0050] The pseudo-Forsythia suspensa extract prepared in Example 1 was used to prepare a pseudo-Forsythia suspensoid sterilized water emulsion. The process was as follows:

[0051] a. Weigh each component according to the formula (weight percentage): 50% of pseudoforsythia extract, 5% of ethylene glycol, 10% of castor oil oxirane ether and 1% of dodecanol-1, the balance Is water

[0052] b. Add the pseudoforsythia extract to ethylene glycol and stir to prepare an oil phase liquid for later use;

[0053] c. Mix the castor oil oxirane ether, dodecanol-1 and water evenly, under stirring, slowly add the oil phase liquid in step b to the water phase, stirring at room temperature for 1 hour, then stop, and let stand for 1 hour , That is, fake forsythia antiseptic 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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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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