Microcapsule preparation containing allyl isothiocyanate and preparation method and application of microcapsule preparation

A technology of allyl isothiocyanate and microcapsules, which is applied in the fields of botanical equipment and methods, applications, pesticides, etc., can solve the problem of strong tear-inducing properties of safe original drugs, affecting practical applications, and narrow insecticidal spectrum. and other problems, to achieve the effect of reducing pharmaceutical costs, reducing toxicity, and masking odors

Inactive Publication Date: 2015-06-10
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 s

Method used

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  • Microcapsule preparation containing allyl isothiocyanate and preparation method and application of microcapsule preparation
  • Microcapsule preparation containing allyl isothiocyanate and preparation method and application of microcapsule preparation
  • Microcapsule preparation containing allyl isothiocyanate and preparation method and application of microcapsule preparation

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 and a preparation method and application of the microcapsule preparation. The microcapsule preparation is prepared from a wall material-the polyethylene glycol and a core material-a mixture of the allyl isothiocyanate and allicin and is prepared by the following steps: (1) heating the polyethylene glycol till being melted, maintaining the constant temperature, quickly adding the mixture of the allyl isothiocyanate and the allicin into the melted polyethylene glycol and stirring to form a uniform co-melt of the allyl isothiocyanate, the allicin and the polyethylene glycol; and (2) after naturally cooling, grinding, crushing, and sieving to obtain the microcapsule preparation. The microcapsule preparation containing allyl isothiocyanate disclosed by the invention is high in embedding ratio and strong in synergism, can effectively improve the stability of active ingredients containing the allyl isothiocyanate, prolong the persistence, reduce the toxicity, shelter peculiar smell and reduce the environmental pollution, and has the relatively strong cost advantage and economic benefit and the relatively good preventing and treating effects.

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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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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