A kind of botanical pesticide surfactant and its preparation method and application

A technology for surfactants and botanical pesticides, applied in the field of pesticides, can solve the problems of carcinogenic activity, high toxicity of fish, and difficult to biodegrade, and achieve the effects of low toxicity, low cost and convenient use.

Active Publication Date: 2021-03-30
BEIJING KINGBO BIOTECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

They are highly toxic to fish and difficult to biodegrade. In addition, the impurities contained in the production process have carcinogenic activity
[0006] In addition, in recent years, with the withdrawal of some highly toxic chemical pesticides from the market, it is imperative to develop environmentally friendly botanical pesticides, but it is difficult to fully exert the characteristics of botanical pesticides with traditional surfactants

Method used

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  • A kind of botanical pesticide surfactant and its preparation method and application
  • A kind of botanical pesticide surfactant and its preparation method and application
  • A kind of botanical pesticide surfactant and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Embodiment 1 botanical pesticide surfactant

[0038] This example is used to illustrate the botanical pesticide surfactant of the present invention and its preparation method.

[0039] The raw material is Sophora flavescens, and the source is Sophora flavescens residue left after extracting total alkaloids of Sophora flavescens with ethanol by Inner Mongolia Qingyuanbao Biotechnology Co., Ltd.

[0040] The preparation method of botanical pesticide surfactant is preferably as follows:

[0041] (1) adding bitter bean dregs into water, soaking at 45°C for 24 hours, grinding for 3 hours, to obtain bitter bean dregs slurry A; wherein, the mass ratio of bitter bean dregs to water is 1:5;

[0042] (2) Dissolve pepsin, papain or bromelain in warm water at 30°C to obtain protease solution B;

[0043] (3) Put the bitter soybean dregs slurry A into the heating reaction kettle, adjust the pH to 2 with dilute hydrochloric acid, add protease solution B, heat up to 60°C, stir once e...

Embodiment 2

[0046] The emulsification property of embodiment 2 botanical pesticide surfactants

[0047] 1. Experimental materials and instruments:

[0048] 1. Experimental raw material: peanut oil

[0049] 2. Instruments: centrifuge (Xiangyi TDZ5-WS), beaker, measuring cylinder

[0050] 2. Experimental method:

[0051] Emulsion Stability Determination

[0052] Oil: water=1:9 ratio, add 1% botanical pesticide surfactant obtained in Example 1, stir and mix evenly, prepare emulsion, move the emulsion to a graduated centrifuge tube, and centrifuge at 4000rpm for 15min After reading the emulsified phase volume, calculate the result according to the following formula:

[0053] Emulsion stability % = emulsified layer height / total liquid height × 100%

[0054] The resulting value is: 76.3%.

[0055] It is proved that the botanical pesticide surfactant provided by the invention has strong emulsifying ability and stability.

Embodiment 3

[0056] Embodiment 3 plant source surfactant field test

[0057] 1. Demonstration purposes

[0058] Through experiments, taking 7.5% rotenone EC as an example, the control effect of plant-derived surfactant and traditional agricultural surfactant Nongru 500# on vegetable aphids was tested in the field.

[0059] 2. Demonstration drugs

[0060] 1. Demonstration agent: 7.5% rotenone emulsifiable concentrate A;

[0061] Taking 100 grams of 7.5% rotenone emulsifiable concentrate A as an example, its preparation method is:

[0062] (1) Accurately weigh 7.5 grams of rotenone and put it into a 200mL beaker;

[0063] (2) In the weighed rotenone beaker, add 30 grams of cyclohexanone, fully stir for 15 minutes, all the solids are dissolved;

[0064] (3) in the cyclohexanone solution that dissolves, add the botanical pesticide surfactant of 15 gram embodiment 1 gains, stir 15 minutes;

[0065] (4) Continue to add 47.5 grams of xylene and stir for 30 minutes to obtain 7.5% rotenone emuls...

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Abstract

The invention relates to the field of pesticides and specifically discloses a botanical pesticide surface active agent and a preparation method thereof. The botanical pesticide surface active agent is prepared by the steps: soaking fenugreek dregs by water and grinding to obtain fenugreek dreg slurry; then performing enzymatic hydrolysis through pepsin or papain or bromelain and separating undissolved substances to obtain the botanical pesticide surface active agent. The botanical pesticide surface active agent disclosed by the invention is a biological compound which is extracted from plants and has surface activity; the botanical pesticide surface active agent not only has physicochemical property of a chemical synthesis surface active agent, but also has advantages of no toxicity, biodegradation and the like; application prospect of the botanical pesticide surface active agent is very wide; furthermore, the botanical pesticide surface active agent may become substitute good or upgraded and updated products of the chemical synthesis surface active agent.

Description

technical field [0001] The invention relates to the field of pesticides, in particular to a botanical pesticide surfactant. Background technique [0002] Surfactants in pesticides are one of the indispensable components for making pesticide raw materials that cannot be used directly into usable pesticide preparations. As a pesticide adjuvant, it is applied to pesticides, which can not only improve the use effect of pesticides, but also reduce the amount of pesticides used, reduce the impact of pesticides on the environment, and bring huge benefits to agricultural production. However, since pesticides are a class of special chemicals with extremely strong biological activity, and their control objects, protection objects and environmental conditions are very complicated, the surfactants in pesticides must be selected and formulated according to the properties and characteristics of the original drugs, and they also need to be prepared. Consider the effects of the surfactant ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01N25/30A01N25/04A01N43/90A01P7/04
CPCA01N25/04A01N25/30A01N43/90
Inventor 魏凤彪朱建伟徐向荣
Owner BEIJING KINGBO BIOTECH
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