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Water suspension agent of streptomyces roseoflavus active metabolite Roflamycoin

A water suspension, water suspension technology, applied in the directions of fungicides, biocides, animal repellents, etc., to achieve the effects of good compatibility, safe processing and use, and low packaging and transportation costs

Active Publication Date: 2017-12-01
HEBEI AGRICULTURAL UNIV.
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no relevant report on the use of Roflamycoin in the prevention and treatment of plant diseases, so the patent of this invention is innovative

Method used

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  • Water suspension agent of streptomyces roseoflavus active metabolite Roflamycoin
  • Water suspension agent of streptomyces roseoflavus active metabolite Roflamycoin

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Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0050] Step 1: extract Roflamycoin, the active metabolite of Streptomyces roseoflavum, the extraction method is based on the "Structure and preparation of two active metabolites of Streptomyces roseoflavum, patent application number 201710091330.X";

[0051] Step 2: Preliminary screening of wetting and dispersing agent types by flow point method;

[0052] Step 3: The types of wetting and dispersing agents are determined as Darun DS97, Huntsman 2208 and LT-767C;

[0053] Step 4: The type and amount of the thickener are determined to be 0.1% xanthan gum and 1% magnesium aluminum silicate;

[0054] Step 5: The amount of wetting agent, dispersant and thickener is determined as follows: Darun DS97 1%, Huntsman 2208 1% and LT-767C2%, xanthan gum 0.1% and 1% magnesium aluminum silicate;

[0055] Step 6: The type of antifreeze is determined to be 5% ethylene glycol;

[0056] Step 7: Detection of various indicators such as Roflamycoin water suspension particle size, viscosity, pH val...

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Abstract

The invention discloses preparation of a Roflamycoin water suspension agent. Through screening on additives, a formula of the Roflamycoin water suspension agent is finally determined according to the following composition: 0.1% of Roflamycoin (conversion to 100%), 1% of wgwin DS97, 1% of Huntsman 2208, 2% of a LT-767C dispersant, 0.1% of xanthan gum, 1% of aluminum-magnesium silicate, 0.2% of a defoamer and 5% of ethylene glycol, and water is added to 100%. With zirconium beads as a medium, the water suspension agent is produced, medium coefficient being 1 and grinding time being 2 h. In the invention, viscosity, pH value, particle size, suspension rate, heat-store decomposition rate and the like of the Roflamycoin water suspension agent are inspected, and all performance indices of the product are qualified. In the prior art, control efficiency, action mechanism, lasting period, action range and the like of the compound Roflamycoin on diseases of plants are never reported, so that the Roflamycoin water suspension agent has innovativeness, is short in development period, packaging cost and transporting cost, has simple process and long lasting period, and allows large-scale production.

Description

Technical field: [0001] The invention relates to a preparation in which Roflamycoin, a polyene macrolide compound produced by Streptomyces roseus flavum, is used as an active ingredient and a preparation method thereof. Background technique [0002] Streptomyces roseoflaver (Streptomyces roseoflaver) strain 0116 is an antagonistic bacteria screened from the natural decline soil of potato scab by using the self-innovated screening method of biocontrol bacteria in our laboratory. The strain and its fermentation liquid have a strong inhibitory effect on various important plant pathogens such as cotton verticillium dahliae, melon powdery mildew, potato scab, root-knot nematode incognita, etc., and have good biocontrol application potential. The bacterial strain has been entrusted to the "General Microorganism Center of China Committee for the Collection of Microorganisms" for preservation, name: Streptomyces roseoflaver, preservation number: CGMCC No. 1471. [0003] Through the...

Claims

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Application Information

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IPC IPC(8): A01N43/90A01N25/04A01P3/00
CPCA01N25/04A01N43/90
Inventor 赤国彤李亚宁刘大群刘亚南孟庆芳
Owner HEBEI AGRICULTURAL UNIV.