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Marine organism polysaccharide copper compound and preparation method and application thereof

A technology of marine biological polysaccharides and complexes, applied in botany equipment and methods, chemicals for biological control, applications, etc., can solve problems such as high cost, poor drug efficacy, and difficult promotion, and achieve good solubility, Improve the antibacterial activity and expand the effect of the application field

Inactive Publication Date: 2016-07-27
INST OF OCEANOLOGY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, direct use of chitosan as a single active component has problems such as poor drug efficacy, large dosage, and high cost, so it is difficult to promote

Method used

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  • Marine organism polysaccharide copper compound and preparation method and application thereof
  • Marine organism polysaccharide copper compound and preparation method and application thereof
  • Marine organism polysaccharide copper compound and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] The preparation of embodiment 1 derivative 1

[0031] Add 6.1 grams of nicotinamide and 5 grams of acetylacetone into 50 mL of absolute ethanol, and reflux for 12 hours. The reactant is rotary evaporated, washed with cold ethanol, and dried at 60 degrees Celsius to obtain the monoquaternary ammonium ligand.

[0032] Add 0.5 grams of chitosan with a molecular weight of 1.3 million to 20 mL of absolute ethanol and 25 mL of water, and add 0.5 mL of acetic acid dropwise to it while stirring; In the system, reflux for 12 hours; add 2.5 grams of chloroacetic acid to 10 mL of absolute ethanol, dropwise add to the reaction system, react at 60 ° C for 6 hours, cool to room temperature, add absolute ethanol to precipitate, precipitate with suction filtration, anhydrous Wash with ethanol and dry at 60°C to obtain light yellow powder, which is O-carboxymethyl chitosan Schiff base derivative.

[0033] Dissolve 0.5 g of O-carboxymethyl chitosan Schiff base derivative in 30 mL of wat...

Embodiment 2

[0036] The preparation of embodiment 2 derivative 2

[0037] Add 6.1 g of isonicotinamide and 5 g of acetylacetone into 50 mL of absolute ethanol, and react under reflux for 12 hours. The reactant is rotary evaporated, washed with cold ethanol, and dried at 60 degrees Celsius to obtain the monoquaternary ammonium ligand.

[0038] Add 0.5 g of chitosan with a molecular weight of 1.3 million to 20 mL of anhydrous ethanol and 25 mL of water, and add 0.5 mL of acetic acid dropwise to it with stirring; 1.9 g of monoquaternary amine ligands are added to 50 mL of anhydrous ethanol and added dropwise to the reaction. In the system, the reaction was refluxed for 12 hours; 2.5 g of chloroacetic acid was added to 10 mL of anhydrous ethanol, added dropwise to the reaction system, reacted at 60°C for 6 hours, cooled to room temperature, precipitated by adding anhydrous ethanol, precipitated by suction filtration, anhydrous Wash with ethanol and dry at 60°C to obtain light yellow powder, whic...

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PUM

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Abstract

The invention belongs to the technology of ocean chemical engineering and particularly relates to a marine organism polysaccharide copper compound and a preparation method and application thereof.The compound is as shown in the formula I.In the formula I, X is pyridyl, and n is 4-4000.The compound shown in the formula I is applied to agricultural fungicide preparation.A prepared O-carboxymethyl chitosan acetylacetone nicotinamide schiff base copper compound has good solubility, can be dissolved in various solvents, improves the antifungal effect, prevents heavy metal ions from being left in soil and has potential application value in the pesticide field, and the application field of the compound is widened.The formula I is as shown in the description.

Description

technical field [0001] The invention belongs to marine chemical engineering technology, and in particular relates to a marine biological polysaccharide copper complex and its preparation method and application. Background technique [0002] Copper preparations have been widely used for a long time due to many advantages such as low price, simple use method, and not easy to produce drug resistance. It is mainly divided into two types: inorganic and organic. Relying on the release of copper ions to interact with -SH, -NH2, -COOH, -OH and other groups in the protein in the pathogenic bacteria, resulting in the death of the pathogenic bacteria. However, improper use of traditional copper preparations can easily cause phytotoxicity and induce the outbreak of mites. Therefore, the content and release capacity of copper ions are the main factors that determine the bactericidal and disease-preventing effects of copper preparations, and are also important factors that determine the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08B37/08A01N55/02A01P3/00
CPCA01N55/02C08B37/003
Inventor 李鹏程刘卫翔秦玉坤刘松邢荣娥于华华李克成杨悦孙雨豪
Owner INST OF OCEANOLOGY - CHINESE ACAD OF SCI
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