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Molecular low-ester pectin copper and preparation method thereof

A low-ester pectin and molecular type technology, applied in the direction of additional food elements, animal husbandry, application, etc., can solve the problems of poor water solubility of organic copper supplements, pollution of soil and water environment, and difficulty in adding feed accurately, etc., to achieve easy promotion Application, cheap raw materials, good stability

Active Publication Date: 2021-10-29
ZHONGBEI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] 2. The copper content of copper supplements is high (the three copper contents are 25.6%, 35.2%, and 51.8% respectively), and the amount of copper supplements added is very small relative to the total feed, so it is difficult to accurately add feed
[0006] 3. At present, the most widely used inorganic copper salt, excessive addition, weak absorption, a large amount of copper ions excreted with feces cause soil and water environment pollution
[0007] 4. The existing organic copper supplements have poor water solubility, which will affect the bioavailability

Method used

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  • Molecular low-ester pectin copper and preparation method thereof
  • Molecular low-ester pectin copper and preparation method thereof
  • Molecular low-ester pectin copper and preparation method thereof

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preparation example Construction

[0038] The present invention provides a kind of molecular type low ester pectin copper and preparation method thereof, the technical scheme of preparation is specifically as follows:

[0039] Step 1: Put a certain quality of low-ester pectin and the solubilizer trisodium citrate, mix evenly, add water to dissolve at room temperature to form a uniform pectin solution with a certain mass concentration;

[0040] The degree of esterification of pectin is less than 40%, and its molecular weight and distribution are greater than 100kD. The degree of esterification and molecular weight distribution affect the ability of pectin to complex copper ions.

[0041] The mass ratio of pectin to trisodium citrate is 10:1-12:1, mixed evenly, trisodium citrate acts as a solubilizer and solubilizer, which is beneficial to the rapid swelling and full dissolution of polymer pectin.

[0042] Add water at room temperature to dissolve into a homogeneous solution, and control the pectin concentration ...

Embodiment 1

[0057] Add low-ester pectin in the there-necked bottle, dissolve with distilled water to obtain 40g / L pectin solution, and the solution dispersibility is not good. Stir slowly, and drop a certain volume of 1.0 mol / L copper sulfate aqueous solution and 2.0 mol / L trisodium citrate aqueous solution into the reaction system. Control raw materials low ester pectin and CuSO 4 ·5H 2 O (as CuSO 4 The mass ratio of meter) is 4:1, and the mass ratio of raw material low-ester pectin and catalyst trisodium citrate is 2:1 simultaneously. During the dropwise addition, control the reaction solution to show acidity. The product is a blue-green hard gel (jelly-like), and stop adding copper sulfate immediately when blue flocculent precipitates are produced. Use 2mol / L NaOH solution to adjust the pH to 7.5. Stir and react at a constant temperature of 50°C for 40min. After the reaction is completed, concentrate while hot to 1 / 2 of the original volume, and filter out insoluble impurities. Th...

Embodiment 2

[0059] Add low-ester pectin into the three-necked bottle, add trisodium citrate, control the mass ratio to 10:1, and mix well. Dissolve with distilled water to obtain 40g / L pectin solution, and the solution is uniform. Stir slowly, and drop a certain volume of 1.0 mol / L copper sulfate aqueous solution and 2.0 mol / L trisodium citrate aqueous solution into the reaction system. Control raw materials low ester pectin and CuSO 4 ·5H 2 O (as CuSO 4 The mass ratio of meter) is 4:1, and the mass ratio of raw material low-ester pectin and catalyst trisodium citrate is 2:1 simultaneously. During the dropwise addition, control the reaction solution to show acidity. When the pectin becomes a hard gel, continue to add CuSO 4 solution, colloid dissolved. The product is a blue-green hard gel (jelly-like), and the production of blue flocculent precipitation stops adding copper sulfate dropwise immediately. The pH was adjusted to 7.2 with 2mol / L NaOH solution, and the reaction was stirr...

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Abstract

The invention provides molecular low-ester pectin copper and a preparation method thereof.The preparation method specifically comprises the following steps: firstly, placing a certain mass of pectin and a solubilizer trisodium citrate in a three-neck bottle to be mixed to be uniform, and dissolving the mixture into a uniform solution with a certain volume of distilled water; 2, slowly stirring, and simultaneously dropwise adding a certain volume of 1.0 mol / L copper sulfate aqueous solution and a certain volume of 2.0 mol / L trisodium citrate aqueous solution into a reaction system; and when the blue flocculent precipitate is produced, dropwise adding of copper sulfate is stopped immediately; and 3, adjusting the reaction solution to be alkaline by using a 2-4mol / L NaOH aqueous solution, and controlling the pH value to be 7.0-7.5; stirring for 60-80 minutes at the constant temperature of 55-60 DEG C, concentrating to 1 / 2-1 / 3 of the original volume while the raw materials are hot, cooling the concentrated solution to room temperature, filtering to remove insoluble impurities, carrying out alcohol precipitation by using 1.0-1.5 times of absolute ethyl alcohol in volume, and drying to obtain blue-green powder which is soluble in water and has the copper content of 8-15%.

Description

【Technical field】 [0001] The invention relates to the technical field of copper additives for feed, in particular to a molecular type low-ester pectin copper and a preparation method thereof. 【Background technique】 [0002] Copper is one of the very important essential trace elements for the body, and its content in the body is second only to iron and zinc. Copper participates in various physiological activities of the body, and plays a vital role in the process of the body's synthesis of connective tissue. Copper has a great influence on the health of body organs, such as nerves, blood vessel walls and bones. Copper also plays a unique catalytic role in the biological system of the body. Copper can maintain the structure and function of the nervous system, maintain the integrity of hematopoietic function and blood vessel walls, maintain bone health, protect the normal pigment structure of hair, maintain immune function, and ensure Normal endocrine function, etc. Therefor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08B37/06A23K20/163A23K20/20
CPCC08B37/0045A23K20/30A23K20/163
Inventor 马雪梅任利勇于嘉仪赵乾冯丽朱海林马忠平胡志勇
Owner ZHONGBEI UNIV
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