Preparation method and purpose of copper-carried silicate antimicrobial agent

A technology of silicate and antibacterial agent, which is applied in the field of preparation of copper-loaded silicate antibacterial agent, can solve the problems of loss of antibacterial activity and high product cost, achieve the effects of inhibiting proliferation, improving production performance, and reducing animal diarrhea rate

Inactive Publication Date: 2006-09-06
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But the product cost is high, and the Ag + It is easily reduced to metallic silver under the conditions of light and heat; Ag + can also interact with Cl in aqueous medium - 、HS - , S 2- and SO 4 2- and other anions react to form water-insoluble AgCl and Ag 2 S, thereby losing antibacterial activity

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] 1) The montmorillonite mineral produced in Anji, Zhejiang, together with sodium chloride equivalent to 5% of the mineral weight, was added with water and stirred evenly to make a suspension slurry with a concentration of 10%, sodiumized at room temperature for 10 hours, washed 5 times with water, Re-made pulp with a concentration of 10%;

[0022] 2) the molecular weight that is equivalent to 0.5% of montmorillonite mineral weight is 2kDa, the chitosan that deacetylation degree is 80% is dissolved in the acetic acid aqueous solution that volume fraction is 1%, is made into chitosan content (by weight) It is 0.1g / 100mL chitosan acid solution, slowly add the chitosan acid solution into the pulp of step 1) under stirring, continuously stir and react for 5 hours, and the reaction temperature is 20°C;

[0023] 3) Slowly add copper chloride containing 6% of the weight of the montmorillonite mineral into the slurry of step 2) under stirring, detect and adjust the pH value of th...

Embodiment 2

[0028] 1) The montmorillonite produced in Inner Mongolia, together with sodium chloride equivalent to 15% of the mineral weight, was added with water and stirred evenly to make a suspension slurry with a concentration of 20%, sodiumized at room temperature for 15 hours, washed 7 times with water, and re- Made into pulp with a concentration of 20%;

[0029] 2) be equivalent to the molecular weight of 5% montmorillonite mineral weight be 80kDa, the chitosan that deacetylation degree is 95% is dissolved in the hydrochloric acid aqueous solution of 5% by volume fraction, is made into chitosan content (by weight) It is 5g / 100mL chitosan acid solution, slowly add the chitosan acid solution into the slurry in step 1) under stirring, and continuously stir and react for 10 hours, and the reaction temperature is 70°C;

[0030] 3) Copper nitrate hexahydrate (Cu(NO) with a copper content of 1% by weight of montmorillonite 3 ) 2 ·6H 2 0), under stirring, slowly add in the pulp of step 2...

Embodiment 3

[0041] 1) The montmorillonite produced in Hebei, together with sodium chloride equivalent to 10% of the mineral weight, was added with water and stirred evenly to make a suspension slurry with a concentration of 15%, sodiumized at room temperature for 12 hours, washed 6 times with water, and re- Made into pulp with a concentration of 15%;

[0042] 2) be that the molecular weight that is equivalent to 2.5% of montmorillonite mineral weight is 40kDa, the chitosan that deacetylation degree is 85% is dissolved in the acetic acid aqueous solution that volume fraction is 2%, is made into chitosan content (by weight) The chitosan acid solution is 2g / 100mL, slowly add the chitosan acid solution into the slurry in step 1) under stirring, and continuously stir for 7 hours, and the reaction temperature is 50°C;

[0043] 3) Slowly add copper sulfate having a copper content of 3% by weight of the montmorillonite mineral into the slurry of step 2) under stirring, detect and adjust the pH va...

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PUM

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Abstract

The invention discloses a method for preparing an antibacterial agent carrying copper and metasilicate and its usage. The method comprises the followinf steps :( 1) montmorillonite sodiuming; (2) making montmorillonite load chitose; (3) loading copper; (4) drying filter cake and disintegrating. The product can be used as feed additive for poultry, aquatic creature, sheep and cow, and it possesses strong antibiotic action. It is hard for bacteria to generate drug tolerance. The product can effectively inhibit the propagation of enteric pathogenic bacteria, which is good for secretory of digestive enzyme and digestion of feed. The product can increase animal survival rate, reduce loose bowel movement and increase production capacity, it can also replace antibiotics and antibacterial drugs, and there is no antibiotics residue in animal product.

Description

technical field [0001] The invention relates to a preparation method and application of a copper-loaded silicate antibacterial agent. Background technique [0002] There are a variety of bacteria in the digestive tract of animals, some can consume nutrients, and some can produce toxins and bacterial enzymes, which can directly or indirectly destroy the shape and function of the intestinal mucosa, thereby reducing the feed efficiency and growth of livestock and poultry performance. If the number of intestinal pathogenic bacteria exceeds a certain value, indigestion and diarrhea may occur in mild cases, and enterogenous systemic infection may occur in severe cases, even life-threatening, which makes antibiotics and antibacterial drugs widely used in animal husbandry. The extensive use of antibiotics has played a role in promoting the growth of livestock and poultry, preventing and resisting diseases to a certain extent. However, the long-term use and abuse of antibiotics has...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N59/20A61K33/34A23K1/175A23K20/163A23K20/20A23K20/28
Inventor 夏枚生胡彩虹赵文艳
Owner ZHEJIANG UNIV
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