A kind of ginkgolic acid-rhamnolipid compound fungicide and its preparation method and application

A compound bactericide and ginkgolic acid technology, which is applied in the field of pesticides, can solve the problems of low extraction rate of ginkgo active ingredients and unsatisfactory bactericidal effect, and achieve the effects of improving yield and purity, solving blockage, and efficient extraction

Inactive Publication Date: 2021-01-26
LINYI UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to overcome the defects of low extraction rate of ginkgo active components and unsatisfactory bactericidal effect in the prior art, and provide a method of extracting ginkgolic acid from ginkgo leaf waste residue, waste liquid and testa to prepare plant-derived fungicides

Method used

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  • A kind of ginkgolic acid-rhamnolipid compound fungicide and its preparation method and application
  • A kind of ginkgolic acid-rhamnolipid compound fungicide and its preparation method and application

Examples

Experimental program
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Effect test

Embodiment 1

[0031] A ginkgolic acid-rhamnolipid compound fungicide is prepared from the following raw materials in parts by weight: 15 parts of ginkgolic acid extract, 10 parts of rhamnolipid, 3 parts of synergist, 1 part of wetting agent 1 part, 1 part of dispersant, 0.5 part of preservative, 0.5 part of antifreeze and 10 parts of filler.

[0032] The synergist is formed by mixing Houttuynia cordata extract and bamboo vinegar in a weight ratio of 1:2, and the Houttuynia cordata extract is prepared by the following method: take 400 g of Houttuynia cordata, add appropriate amount of distilled water to decoct Three times, each time for 30 minutes, the combined filtrate was concentrated to 1 L, which was the Houttuynia cordata extract; the pH of the bamboo vinegar solution was 2-4; it was purchased from Zhejiang Lishui Lin Hi-Tech Co., Ltd.

[0033]The wetting agent is saponin powder; the dispersant is lignin; the filler is diatomaceous earth; the preservative is sorbate, and the present emb...

Embodiment 2

[0044] A ginkgolic acid-rhamnolipid compound bactericide is prepared from the following raw materials in parts by weight: 20 parts of ginkgolic acid extract, 12 parts of rhamnolipid, 4 parts of synergist, 2 parts of wetting agent parts, 2 parts of dispersants, 0.8 parts of preservatives, 0.6 parts of antifreeze and 12 parts of fillers.

[0045] The synergist is formed by mixing Houttuynia cordata extract and bamboo vinegar according to a weight ratio of 1:3, and the Houttuynia cordata extract is prepared by the following method: take 400 g of Houttuynia cordata, add appropriate amount of distilled water to decoct Three times, each time for 30 minutes, the combined filtrate was concentrated to 1 L, which was the Houttuynia cordata extract; the pH of the bamboo vinegar solution was 2-4; it was purchased from Zhejiang Lishui Lin Hi-Tech Co., Ltd.

[0046] The wetting agent is fatty alcohol polyoxyethylene ether; the dispersant is sodium polyacrylate; the filler is bentonite; the ...

Embodiment 3

[0057] A ginkgolic acid-rhamnolipid compound bactericide is prepared from the following raw materials in parts by weight: 25 parts of ginkgolic acid extract, 15 parts of rhamnolipid, 5 parts of synergist, 3 parts of wetting agent 1 part, 3 parts of dispersant, 1 part of preservative, 0.8 part of antifreeze and 15 parts of filler.

[0058] The synergist is formed by mixing Houttuynia cordata extract and bamboo vinegar according to a weight ratio of 1:5, and the Houttuynia cordata extract is prepared by the following method: take 400 g of Houttuynia cordata, add appropriate amount of distilled water to decoct Three times, each time for 30 minutes, the combined filtrate was concentrated to 1 L, which was the Houttuynia cordata extract; the pH of the bamboo vinegar solution was 2-4; it was purchased from Zhejiang Lishui Lin Hi-Tech Co., Ltd.

[0059] The wetting agent is alkyl sulfate; the dispersant is lignin; the filler is kaolin; the preservative is sodium diacetate, and the an...

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Abstract

The invention discloses a ginkgolic acid-rhamnolipid compound bactericide, a preparation method and application thereof, and belongs to the technical field of pesticides. The invention is prepared from the following raw materials in parts by weight: 15-25 parts of ginkgolic acid extract, 10-15 parts of rhamnolipid, 3-5 parts of synergist, 1-3 parts of wetting agent, and dispersant 1-3 parts, 0.5-1 parts of preservatives, 0.5-0.8 parts of antifreeze and 10-15 parts of fillers. The invention adopts the combination of membrane technology and macroporous adsorption resin to separate and purify the ginkgolic acid, and realizes the high-efficiency extraction of the ginkgolic acid. The present invention adds houttuynia cordata and bamboo vinegar liquid as synergists, and the two cooperate with each other to promote the fungicide of the present invention to exert the bactericidal effect, and meanwhile, the bamboo vinegar also has the effect of promoting the germination, rooting and growth of crop seeds and improving crop yield. The invention selects discarded ginkgo leaf waste residue and outer testa as raw materials to prepare the fungicide, which reduces the use of chemical pesticides and reduces environmental pollution.

Description

technical field [0001] The invention relates to the technical field of pesticides, in particular to a ginkgolic acid-rhamnolipid compound fungicide and its preparation method and application. Background technique [0002] my country is rich in ginkgo resources, especially the ginkgo and ginkgo leaves in southern Shandong, which are famous at home and abroad for their high content of active ingredients. The flavonoids and ginkgolides in Ginkgo biloba have significant curative effects on cardiovascular and cerebrovascular diseases. The sales of Ginkgo biloba extracts are relatively large in the domestic and foreign markets. Therefore, the focus of research and development at home and abroad is the extraction of flavonoids and lactones and applications. Ginkgolic acid is also an important component that cannot be ignored in ginkgo leaves, fruits and testa, accounting for 1-2% of ginkgo leaves (dry), accounting for 3-5% of ginkgo testa (dry), extracted flavonoids and endogenous...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01N65/08A01N61/00A01N37/40A01N25/30A01P1/00A01P3/00
CPCA01N25/30A01N37/40A01N61/00A01N65/00A01N65/08
Inventor 张素军冷鹏张祥胜王军杨加鑫
Owner LINYI UNIVERSITY
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