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Horseradish microcapsule suspending agent and preparation method thereof

A microcapsule suspension, horseradish microtechnology, applied in the field of horseradish microcapsule suspension and its preparation, can solve the problem of high application cost, achieve short reaction time, improve stability, and reduce the number of applications

Inactive Publication Date: 2018-06-08
段永恒
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The preparation of horseradish microcapsules is mainly coated with β-cyclodextrin. β-cyclodextrin is mainly used for food additives and antibacterial agents, and the cost of pesticide application is relatively high

Method used

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  • Horseradish microcapsule suspending agent and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Embodiment 1: horseradish microcapsule suspension

[0038] 1. Preparation method

[0039]1) Oil phase preparation: add 0.15g emulsifier (0.10g castor oil polyoxyethylene ether + 0.05g calcium dodecylbenzenesulfonate) to 2.00g horseradish, mix well, then add 0.10g stabilizer Epichlorohydrin and 0.20 g of oil-phase monomer toluene-2,4-diisocyanate were uniformly mixed to obtain an oil-phase mixed liquid.

[0040] 2) Water phase preparation: 1.00 g of thickener hydroxyethyl cellulose was dissolved in 99.00 g of deionized water to obtain a 1.00% hydroxyethyl cellulose solution.

[0041] 3) Mixing: Mix 2.45 g of the oil phase mixture in step 1) and 16.55 g of the thickener hydroxyethyl cellulose solution in step 2), stir evenly, and emulsify at 20°C at 3000 rpm for 0.5 min at high speed, A microsuspension of the O / W system was obtained.

[0042] 4) Polymerization: Stir the microsuspension obtained in step 3) at a slow speed, slowly add 1.00 g of 1% ethylenediamine aqueous...

Embodiment 2

[0045] Embodiment 2: horseradish microcapsule suspension

[0046] 1. Preparation method

[0047] 1) Oil phase preparation: add 0.15g emulsifier (0.10g castor oil polyoxyethylene ether + 0.05g calcium dodecylbenzenesulfonate) to 2.00g horseradish, mix well, then add 0.20g stabilizer Epichlorohydrin and 0.20 g of oil-phase monomer toluene-2,4-diisocyanate were uniformly mixed to obtain an oil-phase mixed liquid.

[0048] 2) Water phase preparation: 1.00 g of thickener hydroxyethyl cellulose was dissolved in 99.00 g of deionized water to obtain a 1.00% hydroxyethyl cellulose solution.

[0049] 3) Mixing: Mix 2.45 g of the oil phase mixture in step 1) and 16.55 g of the thickener hydroxyethyl cellulose solution in step 2), stir evenly, and emulsify at 20°C at 3000 rpm for 0.5 min at high speed, A microsuspension of the O / W system was obtained.

[0050] 4) Polymerization: Stir the micro-suspension obtained in step 3) at a slow speed, slowly add 1.00 g of 0.5% ethylenediamine aqu...

Embodiment 3

[0053] Embodiment 3: horseradish microcapsule suspension

[0054] 1. Preparation method

[0055] 1) Oil phase preparation: add 0.15g emulsifier (0.10g castor oil polyoxyethylene ether + 0.05g calcium dodecylbenzenesulfonate) to 2.00g horseradish, mix well, then add 0.10g stabilizer Epichlorohydrin and 0.20 g of oil-phase monomer toluene-2,4-diisocyanate were uniformly mixed to obtain an oil-phase mixed liquid.

[0056] 2) Water phase preparation: 0.50 g of thickener xanthan gum was dissolved in 99.50 g of deionized water to obtain a 0.50% xanthan gum solution.

[0057] 3) Mixing: Mix 2.45 g of the oil phase mixture in step 1) and 16.55 g of the thickener xanthan gum solution in step 2), stir evenly, and emulsify at 3000 rpm at 20°C for 0.5 min at high speed to obtain O / W system microsuspension.

[0058] 4) Polymerization: Stir the microsuspension obtained in step 3) at a slow speed, slowly add 1.00 g of 1% ethylenediamine aqueous solution dropwise, after 5 minutes of compl...

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Abstract

The invention belongs to the field of novel pesticide preparation and relates to a horseradish microcapsule suspending agent and a preparation method thereof. In the microcapsule suspending agent, horseradish serves as a capsule core, polyurea which is obtained through interface polymerization reaction of an oily monomer isocyanate compound and a water-based monomer polyamino compound serves as acapsule wall, and the mass ratio of the capsule core to the capsule wall is 1-40 to 1-10. Through the preparation method of the horseradish microcapsule suspending agent, which is provided by the invention, the capsule wall is solidified at normal temperature, energy consumption is reduced, volatilization of the horseradish is effectively retarded, the medicine effective period of the horseradishis prolonged, the stability of the horseradish is improved by adding a proper amount of a stabilizer, damages to a medicine applying person are reduced, and the grain size of the prepared microcapsuleis 0.5 to 40 um.

Description

technical field [0001] The invention belongs to the field of novel pesticide preparations, and in particular relates to a horseradish microcapsule suspension and a preparation method thereof. Background technique [0002] Horseradish belongs to a plant-derived biopesticide. It is currently used as an antibacterial drug, fungicide, and insecticide. It is a colorless or light amber oily liquid that is volatile and has a pungent odor. The chemical name is allyl iso Thiocyanate, the chemical formula is C 4 h 5 NS. The structural formula is as follows formula 1. [0003] [0004] Horseradish has broad-spectrum antiseptic and antibacterial properties, and has a strong inhibitory effect on bacteria, molds and yeasts. Verticillium and other plant pathogenic fungi have a certain inhibitory effect on the main pathogenic bacteria after harvest of fruits and vegetables, including Botrytis, koji, Candida, Mucor and Penicillium, can inhibit the germination and The effect of myceli...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N47/46A01N25/28A01N25/04A01N25/22A01P1/00A01P3/00A01P5/00A01P7/04B01J13/16
CPCA01N25/04A01N25/22A01N25/28A01N47/46B01J13/16
Inventor 段永恒樊渊丁建云崔建臣张建华姚丹丹
Owner 段永恒
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