Microcapsule preparation containing allyl isothiocyanate and its preparation method and application

A technology of allyl isothiocyanate and microcapsules, which is applied in the fields of botanical equipment and methods, applications, insecticides, etc., and can solve the problems of strong lachrymatory properties of safe original drugs, affecting practical applications, and high volatility. , to achieve the effect of reducing the cost of medicines, reducing toxicity, and masking odors

Inactive Publication Date: 2017-04-05
WUHAN POLYTECHNIC UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the price of horseradish medicine is relatively expensive, the insecticidal spectrum is narrow, and the volatility is high, so that the original medicine of the medicine can only control stored grain pests in a short period of time, and the poisoning of the original medicine of the medicine makes the safety of application And there are problems such as strong tear gas in the original drug, which affects its practical application

Method used

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  • Microcapsule preparation containing allyl isothiocyanate and its preparation method and application
  • Microcapsule preparation containing allyl isothiocyanate and its preparation method and application
  • Microcapsule preparation containing allyl isothiocyanate and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Embodiment 1 The preparation of the microcapsule preparation containing allyl isothiocyanate

[0026] 1) After heating polyethylene glycol 4000 in a constant temperature water bath until it melts, quickly add a mixture of allyl isothiocyanate and allicin to the melted polyethylene glycol 4000 at a constant temperature of 60°C , the amount of the mixture of allyl isothiocyanate and allicin (the mass ratio of allyl isothiocyanate and allicin is 1:3) is 100uL / g relative to polyethylene glycol 4000. Stir at a speed of 40r / min for 2 minutes to form a homogeneous blend of allyl isothiocyanate, allicin and polyethylene glycol 4000;

[0027] 2) After natural cooling, grind and pulverize, and pass through 100 sieves to obtain a microcapsule preparation loaded with allyl isothiocyanate and allicin.

[0028] Adopt ultraviolet spectrophotometry to measure and obtain the entrapment rate of allyl isothiocyanate and allicin in the microcapsule preparation 88% (the entrapment rate is ...

Embodiment 2

[0029] Example 2 Toxicity Determination of Fumigated Insecticide Sustained Release Agent of Microcapsules Containing Allyl Isothiocyanate

[0030] Use the jar fumigation method. The experiment is divided into two groups: one group is the fumigation method of jars wrapped in filter paper, that is, the application of microcapsule preparations containing allyl isothiocyanate, and several parts of allyl isothiocyanate containing The microcapsule preparation of thiocyanate is put into the prepared filter paper bag, hung in the jar with a thin thread, covered with a cap, and sealed with a plastic wrap; the other group is a filter paper with a wide mouth Bottle fumigation method, that is, the direct application of a mixture of allyl isothiocyanate and allicin (the mass ratio of allyl isothiocyanate and allicin is 1:3), and a certain amount is accurately pipetted with a pipette gun. Add the mixture of allyl isothiocyanate and allicin to a 3cm×7cm filter paper dropwise in the air, qui...

Embodiment 3

[0040] Example 3 The mixture of allyl isothiocyanate and allicin and the microcapsule preparation containing allyl isothiocyanate in different grains were tested for fumigating activity

[0041] The grain mixing method was used for the research. Divide the 1000ml wide-mouth bottle into upper, middle and lower layers on average, weigh a certain amount of medicine and mix them with the wheat, rice and flour in the upper, middle and lower layers respectively, cover the bottle cap, and wrap it with plastic wrap at room temperature. After sealing for 30 days, add gauze bags containing 30 tested pests in the jar. No treatment was used as the blank control, and each treatment was repeated three times. Each treatment was tested in a constant temperature and humidity chamber (temperature: 28°C±1°C, humidity: 75%±5%). After 72 hours, the gauze bag was disassembled, the number of dead insects was counted, and the corrected mortality rates were calculated.

[0042] The data was analyzed...

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Abstract

The invention discloses a microcapsule preparation containing allyl isothiocyanate, a preparation method and an application. The microcapsule preparation is composed of a mixture of polyethylene glycol as a wall material and a mixture of allyl isothiocyanate and allicin as a core material, and is prepared through the following steps: 1) heating the polyethylene glycol until it melts, and keeping the constant temperature, Rapidly add the mixture of allyl isothiocyanate and allicin to the melted polyethylene glycol, and stir to form a homogeneous blend of allyl isothiocyanate, allicin and polyethylene glycol; 2) After natural cooling, grind and pulverize, and sieve to obtain the microcapsule preparation. The microcapsule preparation containing allyl isothiocyanate prepared by the present invention has high loading rate and strong synergistic effect, can effectively improve the stability of the active ingredient containing allyl isothiocyanate and prolong its duration. Efficacy, reduce toxicity, mask odor, reduce environmental pollution; it has strong cost advantage, economic benefit and good control effect.

Description

technical field [0001] The invention belongs to the technical field of grain storage, and in particular relates to a microcapsule preparation containing allyl isothiocyanate, a preparation method and application thereof. Background technique [0002] Food is the most basic means of subsistence needed by human beings to survive. The food issue is a top priority related to a country's national economy and people's livelihood, and is of great significance to a country's security and stability. At present, under the situation that the world's cultivated land resources are limited and the demand for grain consumption continues to increase, strengthening the safe storage of grain is an important measure to ensure national food security. In the process of grain storage, due to the influence of many factors, both the quantity and quality of grain can cause the loss of stored grain. Among them, insect damage and mildew are one of the important factors causing serious loss of grain d...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01N47/46A01N25/28A01N25/18A01P7/04A01P3/00A23B9/18A01N41/00
Inventor 谢令德张晓琳贺艳萍陈雅群
Owner WUHAN POLYTECHNIC UNIVERSITY
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