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Marine organism polysaccharide copper compound, preparation thereof and application of marine organic polysaccharide copper compound serving as agricultural bactericide

A technology of marine biological polysaccharides and complexes, which is applied in the direction of chemicals, fungicides, biocides for biological control, etc., can solve the problems of high cost, difficult promotion, poor efficacy, etc. Application areas, the effect of improving antibacterial activity

Active Publication Date: 2015-12-09
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, preparation thereof and application of marine organic polysaccharide copper compound serving as agricultural bactericide
  • Marine organism polysaccharide copper compound, preparation thereof and application of marine organic polysaccharide copper compound serving as agricultural bactericide
  • Marine organism polysaccharide copper compound, preparation thereof and application of marine organic polysaccharide copper compound serving as agricultural bactericide

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] The preparation of embodiment 1 derivative 1

[0034] Add 2.5 grams of 4-amino-3-methylbenzoic acid and 1.66 grams of acetylacetone into 70 mL of absolute ethanol, react at 60°C for 12 hours, rotate the reactants, wash with cold ethanol, and dry at 60°C to obtain a single quarter Amine ligand.

[0035] 0.5 grams of chitosan with a molecular weight of 1.3 million was added to 20 mL of absolute ethanol and 25 mL of water, and 0.5 mL of acetic acid was added dropwise under stirring; 2.0 grams of monoquaternary ammonium ligands were added to 50 mL of absolute ethanol, and Add it to the reaction system and react at 60°C for 12 hours; add 2.5 grams of chloroacetic acid to 10mL of absolute ethanol, add dropwise to the reaction system, react at 60°C for 6 hours, cool to room temperature, add absolute ethanol to precipitate, and the precipitate is pumped Filter, wash with absolute ethanol, and dry at 60°C to obtain light yellow powder, which is O-carboxymethyl chitosan acetylac...

Embodiment 2

[0038] The preparation of embodiment 2 derivative 2

[0039] Add 2.5 grams of 4-amino-2-methylbenzoic acid and 1.66 grams of acetylacetone into 70 mL of absolute ethanol, react at 60°C for 12 hours, rotate the reactants, wash with cold ethanol, and dry at 60°C to obtain a single quaternary Amine ligand.

[0040] 0.5 grams of chitosan with a molecular weight of 1.3 million was added to 20 mL of absolute ethanol and 25 mL of water, and 0.5 mL of acetic acid was added dropwise under stirring; 2.0 grams of monoquaternary ammonium ligands were added to 50 mL of absolute ethanol, and Add it to the reaction system and react at 60°C for 12 hours; add 2.5 grams of chloroacetic acid to 10mL of absolute ethanol, add dropwise to the reaction system, react at 60°C for 6 hours, cool to room temperature, add absolute ethanol to precipitate, and the precipitate is pumped Filter, wash with absolute ethanol, and dry at 60°C to obtain light yellow powder, which is O-carboxymethyl chitosan acety...

Embodiment 3

[0043] The preparation of embodiment 3 derivative 3

[0044] Add 2.5 grams of 3-amino-2-methylbenzoic acid and 1.66 grams of acetylacetone to 70 mL of absolute ethanol, react at 60°C for 12 hours, spin evaporate the reactants, wash with cold ethanol, and dry at 60°C to obtain a single quaternary Amine ligand.

[0045] 0.5 grams of chitosan with a molecular weight of 1.3 million was added to 20 mL of absolute ethanol and 25 mL of water, and 0.5 mL of acetic acid was added dropwise under stirring; 2.0 grams of monoquaternary ammonium ligands were added to 50 mL of absolute ethanol, and Add it to the reaction system and react at 60°C for 12 hours; add 2.5 grams of chloroacetic acid to 10mL of absolute ethanol, add dropwise to the reaction system, react at 60°C for 6 hours, cool to room temperature, add absolute ethanol to precipitate, and the precipitate is pumped Filter, wash with absolute ethanol, and dry at 60°C to obtain light yellow powder, which is O-carboxymethyl chitosan...

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Abstract

The invention belongs to marine chemical engineering technologies, and particularly relates to a marine organism polysaccharide copper compound, preparation thereof and application of the marine organic polysaccharide copper compound serving as agricultural bactericide. The marine organism polysaccharide copper compound is an O-carboxymethyl chitosan diacetone aminobenzoic acid Schiff base copper compound derivative, and the general formula of the compound is shown as the formula I, in the formula I, X is phenyl for replacing carboxyl and methyl at the same time or phenyl or carboxyl phenyl for replacing carboxyl and halogen at the same time, and n=1000-8000. The prepared O-carboxymethyl chitosan diacetone aminobenzoic acid Schiff base copper compound derivative has good solubility, can be dissolved in kinds of solvent, and avoids heavy metal ion residues in soil while improving the antibacterial effect, the application field of the compound is widened, and the compound has potential application value in the field of pesticide.

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 and application as an agricultural fungicide. 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 and -SH, -NH in the protein in the pathogenic bacteria 2 , -COOH, -OH and other groups play a role, leading to the death of 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 determ...

Claims

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Application Information

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IPC IPC(8): C08B37/08A01N55/02A01P3/00
Inventor 李鹏程刘卫翔秦玉坤刘松邢荣娥于华华李克成李俨岳洋黄勇
Owner INST OF OCEANOLOGY - CHINESE ACAD OF SCI
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