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Metasequoia seed volatile oil microcapsule water dispersible particle bactericide and preparation technology thereof

A technology of metasequoia seeds and dispersed particles, which is applied in the direction of fungicides, biocides, biocides, etc., to achieve the effect of small impact and prolonging the action time

Active Publication Date: 2015-08-19
XINYANG AGRI & FORESTRY UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, chemical pesticides have "3R" problems (resistance, residue, resurgence) and other disadvantages, and they are getting worse

Method used

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  • Metasequoia seed volatile oil microcapsule water dispersible particle bactericide and preparation technology thereof
  • Metasequoia seed volatile oil microcapsule water dispersible particle bactericide and preparation technology thereof
  • Metasequoia seed volatile oil microcapsule water dispersible particle bactericide and preparation technology thereof

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Embodiment Construction

[0009] Volatile oil extraction: Take 400g of metasequoia seeds, put them in a 3000ml round bottom flask, add 2000ml of purified water, install a volatile oil extractor, extract for 2 hours, repeat the operation 5 times, and obtain 60ml of light yellow volatile oil.

[0010] Preparation of inclusion compound of β-cyclodextrin: Weigh 600g of β-cyclodextrin, add 1800ml of purified water and stir to form a paste, gradually add volatile oil to it, place in a 50°C water bath and stir for 2 hours at constant temperature. The obtained paste was dried in a YZG-600 (Nanjing Shineway Pharmaceutical Equipment Co., Ltd.) vacuum device with a vacuum degree of 0.05 MPa and a temperature of 50° C. for 3.5 hours. The massive material was pulverized with a WKF130 universal pulverizer (Weifang North Pharmaceutical Equipment Manufacturing Co., Ltd.) at 200 mesh to obtain 520 g of yellow-white powder clathrate.

[0011] Ingredients mixing: take β-cyclodextrin inclusion compound, weigh 26g of pull-...

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Abstract

A preparation method of a metasequoia seed volatile oil microcapsule water dispersible particle bactericide comprises the following steps: adding water with the volume 5 times the mass of metasequoia seeds to the metasequoia seeds, and extracting volatile oil through a water steam distillation method; taking beta-cyclodextrin 8-10(g / ml) times the volatile oil, adding purified water 2-3 times the volatile oil, stirring to form a paste, adding the volatile oil, carrying out constant temperature stirring at 45-50DEG C for 2-3h, carrying out vacuum drying on the obtained paste for 3-4h, crushing, and sieving by using a 200 mesh sieve to prepare a microcapsule clathrate; adding 60wt% of the microcapsule clathrate, 3wt% of nekal, 5wt% of NNO, 4wt% of ammonium sulfate and 25wt% of white carbon black, and uniformly mixing the above added materials in a multidimensional motion mixer; using 3% of dry starch to prepare a 10-15% starch slurry; and putting the above obtained material in a boiling granulator, spraying the starch slurry, bonding, granulating, and drying to prepare water dispersible particles. A result of quality evaluation of relevant standards (GB) made in China shows that the particles are qualified.

Description

technical field [0001] The invention relates to a botanical fungicide, in particular to a metasequoia seed volatile oil microcapsule water-dispersed granule fungicide and its preparation technology. Background technique [0002] my country is a country with serious agricultural pests. According to reports, there are 1648 major agricultural pests in my country, including 724 diseases, 838 insects (mites), 64 weeds, and 22 pests. According to statistics, under the condition of no prevention and control, on average, the harm of harmful organisms will cause about 15% reduction in food crop production and more than 20% reduction in cotton production every year. Chemical pesticides have played an important role in controlling agricultural pests and protecting agricultural production safety. However, chemical pesticides have disadvantages such as "3R" problems (resistance, residue, and resurgence), and they are becoming more and more serious. The development of botanical pesticid...

Claims

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Application Information

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IPC IPC(8): A01N65/06A01N25/12A01N25/28A01P3/00
Inventor 杨俊杰雷振山陈利军叶兆伟陈月华
Owner XINYANG AGRI & FORESTRY UNIV
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