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Preparation method for enteromorpha polysaccharide cuaminosulfate bactericide

A technology of prolifera polysaccharide and copper complex ammonia is applied in the directions of fungicides, botanical equipment and methods, biocides, etc., can solve the problems of agricultural environment pollution, low toxicity to humans and animals, hidden dangers, etc., and achieves the promotion of plant growth and preparation method. Simple and effective for development

Pending Publication Date: 2017-10-10
青岛海大生物集团股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, copper ammonia has been widely used in agricultural production in my country, but copper ammonia is still a chemical pesticide, and its excessive use will cause agricultural environmental pollution. In addition, copper ammonia has low toxicity to humans and animals, and there are certain safety hazards

Method used

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  • Preparation method for enteromorpha polysaccharide cuaminosulfate bactericide
  • Preparation method for enteromorpha polysaccharide cuaminosulfate bactericide
  • Preparation method for enteromorpha polysaccharide cuaminosulfate bactericide

Examples

Experimental program
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Effect test

Embodiment 1

[0022] Take 600 grams of enzymatically hydrolyzed Enteromorpha polysaccharide concentrated solution (solid concentration is 23±1%), then slowly add 280 grams of ammonia water (concentration 25%) solution, close the reaction vessel (to avoid ammonia water volatilization), turn on the stirring, and keep the temperature at 25 degrees React for half an hour to prepare ammoniated Enteromorpha polysaccharide, then slowly add 150 grams of copper sulfate pentahydrate and 20 grams of citric acid to carry out catalytic chelation reaction to prepare Enteromorpha polysaccharide ammonia copper; The 500Da sodium filter membrane removes free salts, removes unchelated copper ions, ammonia ions, and sulfate ions in the solution, and obtains pure enteromorpha polysaccharide ammonium copper fungicide solution.

Embodiment 2

[0024] Take 500 grams of hydrolyzed Enteromorpha polysaccharide concentrated solution (solid concentration is 20±1%), then slowly add 260 grams of ammonia solution, close the reaction vessel (to avoid volatilization of ammonia water), turn on the stirring, and react at room temperature for 45 minutes at 20 degrees to prepare ammonia Enteromorpha polysaccharide, then slowly add 150 grams of copper chloride dihydrate and 15 grams of citric acid to carry out catalyzed chelation reaction to prepare Enteromorpha polysaccharide ammonium copper; the prepared polysaccharide ammonium copper is removed through a filter membrane of 500-800Da Remove free salt and remove unchelated copper ions, ammonia ions and chloride ions in the solution to obtain pure enteromorpha polysaccharide ammonium copper fungicide solution.

[0025] To the enteromorpha polysaccharide copper ammonia copper solution of embodiment 1, carried out the plate bacteriostasis experiment of four kinds of fungi of apple rin...

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Abstract

The invention discloses a preparation method for preparing polysaccharide cuaminosulfate bactericide by enteromorpha polysaccharide. The method specifically comprises the following steps: (1) polysaccharide ammoniation: causing enteromorpha polysaccharide aqueous solution to react with ammonium hydroxide to prepare ammoniated enteromorpha polysaccharide; (2) copper catalysis chelation reaction: carrying out the catalysis chelation reaction on the ammoniated enteromorpha polysaccharide and copper sulfate or copper chloride under the function of citric acid to prepare enteromorpha polysaccharide cuaminosulfate; (3) membrane filtering: carrying out membrane filtering on the prepared cuaminosulfate to remove copper ions, ammonia ions, sulfate radicals or chloridion which is not chelated in solution to obtain pure product enteromorpha polysaccharide. The preparation method has simple operation steps for preparing the polysaccharide cuaminosulfate, the product is green and organic and is a novel green biological bactericide which conforms to the green industrial development requirement in China, and application experiment result indicates that a sterilization effect is outstanding, and the popularization and the application of the product are favorable for prompting the implementation of synergistic engineering.

Description

technical field [0001] The invention belongs to the technical field of preparation methods of green biological fungicides, and in particular relates to a preparation method of a water-soluble fungicide of enteromorpha polysaccharide and ammonia copper. technical background [0002] Enteromorpha polysaccharide is a natural marine algal polysaccharide extracted from Enteromorpha, which has various biological activities. The seaweed polysaccharides, phenolic polymers, and betaine contained in the seaweed extract can increase the content of soluble polysaccharides in plant cells after being absorbed by plant cells, increase the concentration of protoplasm in plants, and promote the transport of organic and inorganic substances in plants. Orientation, regulate the osmosis of cells, enhance the ability of cells to absorb and retain water. Enteromorpha polysaccharides can induce plants to increase the activity of SOD enzymes and other antioxidant enzymes, remove free radicals in t...

Claims

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Application Information

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IPC IPC(8): A01N43/16A01N59/20A01P3/00A01P21/00
CPCA01N43/16A01N59/20
Inventor 单俊伟王海华宿露译郝晓晨李国霞台文静
Owner 青岛海大生物集团股份有限公司
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