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Preparation method of zinc tryptophan complex

A technology of tryptophan zinc and tryptophan, which is applied in the field of preparation of tryptophan zinc complexes, can solve the problems of unfavorable animal absorption and utilization, high production cost, and large molecular weight, and achieve good application prospects, low cost, and high reaction fast speed effect

Active Publication Date: 2021-02-05
XINGJIA BIO ENG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The reaction process takes a long time, the requirements for the reactor are very high, and the production cost is expensive; and the products generated are all polymers with a large molecular weight, which is not conducive to the absorption and utilization of animals

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] A preparation method of tryptophan zinc of the present invention comprises the following steps:

[0045] Start stirring, and the 218.5Kg sodium carbonate with a purity of 98% is added to the 7m 3 Ethanol-water solution (V 乙醇 :V 水 =1:9), after stirring and dissolving, add 833.6Kg tryptophan with a purity of 98%, pressurize and maintain the pressure at 100KPa, stir until no more bubbles emerge, then heat up to 50°C, and add tryptophan with a purity of 98%. 347.9Kg of zinc sulfate monohydrate was reacted, the pressure was released after 5 hours of reaction, the reaction system was cooled, crystallized, filtered, washed and dried to obtain 636.3Kg of zinc tryptophan.

[0046] The content of tryptophan in the tryptophan zinc product was measured to be 81.9%, Zn 2+ It is 13.2%, the water loss rate at 180°C is 3.6%, and the water loss rate at 104°C is 1.2%, that is, the purity is 98.7%, and the yield is 64.1% in terms of zinc, that is, the molar ratio of tryptophan to zinc ...

Embodiment 2

[0048] A preparation method of tryptophan zinc of the present invention, comprises the following steps: open stirring, in 5m 3 Ethanol-water solution (V 乙醇 :V 水 =1:7), add 1.8L propenyl alcohol, then add 287.7Kg potassium carbonate with a purity of 98%, stir and dissolve, add 833.6Kg tryptophan with a purity of 98%, pressurize and maintain the pressure at 200KPa, stir until no After bubbles emerged, the temperature was raised to 60°C, and 616.1Kg of zinc sulfate heptahydrate with a purity of 98% and 15Kg of p-toluenesulfonic acid were added for reaction. After 4 hours of reaction, the pressure was released, and the reaction system was cooled, crystallized, filtered, washed, and dried. , promptly obtain tryptophan zinc 857.1Kg.

[0049] The content of tryptophan in the tryptophan zinc product was measured to be 80.9%, Zn 2+ It is 13.0%, the water loss rate at 180°C is 3.6%, and the water loss rate at 104°C is 2.3%, that is, the purity is 97.5%, and the yield is 85.3% in term...

Embodiment 3

[0051] A preparation method of tryptophan zinc of the present invention, comprises the following steps: open stirring, in 4m 3 Propanol-water solution (V 丙醇 :V 水 =1:5), add 1.8L propenyl alcohol, then add 346.3Kg sodium bicarbonate with a purity of 98%, add 833.6Kg tryptophan with a purity of 98% after stirring and dissolving, pressurize and maintain the pressure at 500KPa, and stir until After no more bubbles emerged, the temperature was raised to 70°C, and 369.9Kg of zinc sulfate monohydrate and 41.6Kg of benzenesulfonic acid with a purity of 98% were added for reaction. After 3 hours of reaction, the pressure was released, and the reaction system was cooled, crystallized, filtered, washed, After drying, 890.8Kg of zinc tryptophan was obtained.

[0052] The content of tryptophan in the tryptophan zinc product was measured to be 81.4%, Zn 2+ It is 13.1%, the water loss rate at 180°C is 3.6%, and the water loss rate at 104°C is 1.8%, that is, the purity is 98.1%, and the yi...

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Abstract

The invention discloses a preparation method of a zinc tryptophan complex. The method comprises the following steps: starting stirring, adding carbonate or bicarbonate into an organic solvent water solution, stirring to dissolve, adding tryptophan, pressurizing and stirring until no bubbles emerge, heating, adding a zinc source to react, and relieving pressure after the reaction is finished, and cooling, crystallizing, filtering, washing and drying the reaction system to obtain the zinc tryptophan. The preparation method disclosed by the invention is high in reaction rate, high in conversion rate, high in yield, simple and convenient in method, low in cost and capable of realizing industrial large-scale production, no new impurity is introduced, and no by-product is generated. The preparedzinc tryptophan can be used as a novel nutrition enhancer, and compared with other zinc products, the zinc tryptophannot only has the effect of supplementing tryptophan, but also has the effect of supplementing trace elements, and has a good application prospect.

Description

technical field [0001] The invention belongs to the field of feed additives, in particular to a preparation method of tryptophan zinc complex. Background technique [0002] With the improvement of people's living standards and the continuous development of the breeding industry, tryptophan, as an amino acid for feed, has been widely used in piglet feed, breeding pig feed, broiler chicken feed, prawn feed and eel feed. The use of tryptophan as an animal feed additive has the following characteristics: it can adjust the balance of amino acids in the feed and promote animal growth; it can improve meat quality; it can improve the nutritional value of animal feed raw materials with low amino acid digestibility; it can be used to produce low-protein feed, It helps to save protein resources; it can reduce the cost of animal feed raw materials; it can reduce the nitrogen content in livestock and poultry manure and urine, the concentration and release rate of ammonia in livestock and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D209/20A23K20/142
CPCC07D209/20A23K20/142
Inventor 向阳葵邓敏张亚伟周孝治倪国超夏飞辉
Owner XINGJIA BIO ENG CO LTD
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