Preparation method for zinc serine and application of zinc serine in field of animal feed

A technology of zinc serine and animal feed, which is applied in the field of feed additives, can solve the problems of different types of amino acids, difficulty in guaranteeing reaction completion, yield, purity, and different physical and chemical properties, and achieve fast reaction speed, good application prospects, The effect of high yield

Active Publication Date: 2020-05-01
XINGJIA BIO ENG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, different types of amino acids have different physical and chemical properties. It is difficult to guarantee the completion of the reaction, yield, and purity of the product if a synthetic method is applied in general.

Method used

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  • Preparation method for zinc serine and application of zinc serine in field of animal feed
  • Preparation method for zinc serine and application of zinc serine in field of animal feed
  • Preparation method for zinc serine and application of zinc serine in field of animal feed

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] Zinc serine is mainly prepared by reacting serine and light zinc oxide. The preparation method specifically comprises the following steps:

[0059] Add 439.6Kg of serine with a purity of 98% to 1.5t of water, stir, and heat up to 98°C. After the serine is dissolved, add 164.4Kg of light zinc oxide with a purity of 99%, and react at a constant temperature for 0.5h. During the reaction at a constant temperature The solid content of the reaction system is controlled at about 28%. After the reaction is completed, it is cooled to below 40°C to crystallize, the material is discharged, centrifuged, and flash-dried to obtain 519.2Kg of zinc serine.

[0060] The measured serine content in the serine zinc product is 75.0%, Zn 2+ It is 23.4%, the water loss rate at 104°C is 1.3%, that is, the purity is 98.4%, the yield is 92.7% in terms of zinc, the molar ratio of serine to zinc is about 2:1, and the molecular formula is [HOCH 2 CH(NH 2 )COO] 2 Zn.

Embodiment 2

[0062] Zinc serine is mainly prepared by reacting serine and heavy zinc oxide. The preparation method specifically comprises the following steps:

[0063] Get the mother liquor 1.4t of embodiment 1 and join in the reaction kettle, add 5.4t water again, add 347Kg purity and be 98% ammonium chloride, add the 429Kg serine that purity is 98% after stirring and dissolving, stir, be heated up to 80 ℃, After the serine is dissolved, add 166Kg of heavy zinc oxide with a purity of 97%, and react at a constant temperature for 1.8 hours. During the constant temperature reaction, the solid content of the reaction system is controlled at about 13%. After the reaction is completed, cool to below 40°C to crystallize, and discharge After centrifugation and flash drying, 541Kg of zinc serine was obtained.

[0064] The measured serine content in the serine zinc product is 74.5%, Zn 2+ It is 23.2%, the water loss rate at 104°C is 1.9%, that is, the purity is 97.7%, the yield is 95.9% in terms ...

Embodiment 3

[0066] Zinc serine is mainly prepared by reacting serine and a mixture of heavy zinc oxide and light zinc oxide. The preparation method specifically comprises the following steps:

[0067] Take 4.5t of the mother liquor of Example 2 and add it to the reactor, add 418.2Kg of serine with a purity of 98% into 1.8t of water, stir, and heat up to 52°C. After the serine is dissolved, add 98.6Kg of serine with a purity of 99%. High quality zinc oxide and 66.4Kg heavy zinc oxide with a purity of 97%, constant temperature reaction for 3 hours, the solid content of the reaction system is controlled at about 12% during the constant temperature reaction, after the reaction is completed, cool to below 40°C, add 350L ethanol to crystallize, Blowing, centrifugation, flash drying, namely to obtain 543.5Kg of zinc serine.

[0068] The measured serine content in zinc serine products is 74.3%, Zn 2+ It is 23.1%, the water loss rate at 104°C is 2.0%, that is, the purity is 97.4%, the yield is 9...

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Abstract

The invention provides a preparation method for zinc serine capable of being used in an animal feed. The preparation method comprises the following steps: adding serine into a solution, carrying out stirring and heating, after the serine is dissolved, adding a zinc source, namely zinc oxide or zinc hydroxide, carrying out a reaction at a constant temperature, after completion of the reaction, carrying out cooling to 40 DEG C or below, and carrying out crystallizing, filtering and drying so as to obtain the zinc serine. The preparation method provided by the invention is fast in reaction rate,high in conversion rate, high in yield, simple and convenient, low in cost, capable of realizing industrial large-scale production, and free of new impurities and by-products; and compared with zinc products, the zinc serine prepared by using the preparation method provided by the invention has the effects of supplementing zinc nutrition, promoting animal anti-stress, improving immunity, increasing lean meat percentage, increasing slaughter water dripping rate and the like, and has good application prospect.

Description

technical field [0001] The invention belongs to the field of feed additives, in particular to a preparation method of zinc serine and the application of zinc serine in the field of animal feed. Background technique [0002] Serine, also known as β-hydroxyalanine, is a non-essential amino acid. It plays an important role in the manufacture and processing of cell membranes, the synthesis of muscle tissue and sheaths surrounding nerve cells, and the metabolism of fats and fatty acids. It also helps In the production of immune hemoglobin and antibodies, serine is also required to maintain a healthy immune system. [0003] The trace element zinc is one of the essential trace elements for animals, and it has been compared to the "life element" of animals. Since Todd et al. first confirmed that zinc is one of the trace elements necessary for animal nutrition through rat experiments in 1934, people It was gradually found that zinc is a component of more than 200 metalloenzymes, hor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C227/18C07C229/76A23K50/30A23K50/75A23K50/80A23K20/142A23K20/20
CPCC07C227/18A23K50/30A23K50/75A23K50/80A23K20/142A23K20/30C07C229/76
Inventor 邓敏黄逸强王赏初陈光伟
Owner XINGJIA BIO ENG CO LTD
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