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Selenomethionine zinc and preparation method thereof

A technology of selenomethionine and zinc salt, which is applied in the field of selenomethionine derivatives to achieve the effects of stable structure, wide market application prospect, economic value and simple operation

Inactive Publication Date: 2018-12-21
SICHUAN SINYIML BIOTECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, both organic selenium and organic zinc exist alone as compounds of selenium and zinc, and there is no organic compound that contains both selenium and zinc, two essential trace elements for animals

Method used

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  • Selenomethionine zinc and preparation method thereof
  • Selenomethionine zinc and preparation method thereof
  • Selenomethionine zinc and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] This example provides a preparation method for the formula (I) selenomethionine derivative (zinc selenomethionine) provided in the preparation example, which includes the following steps:

[0027] (1) Take 136kg of D-selenomethionine and 450kg of water into the reaction kettle, then add sodium hydroxide to adjust the pH value to 7.0-7.5, then add 100kg of zinc sulfate heptahydrate, stir until dissolved, and heat up to 80-90 ℃ for chelation reaction, the reaction time is 4h;

[0028] (2) After the chelation reaction is completed, the temperature is lowered to 20-30°C for crystallization, and then solid-liquid separation is performed through the centrifugation process. The separated solids are washed with 20kg of pure water, filter cake and vacuum-dried at 80°C to obtain 129.56kg of selenium Zinc methionine substitute;

[0029] (3) The liquid obtained by centrifugation in step (2) is sequentially subjected to evaporation and concentration, filtration, cooling crystalliza...

Embodiment 2

[0031] This example provides a preparation method for the formula (I) selenomethionine derivative (zinc selenomethionine) provided in the preparation example, which includes the following steps:

[0032] (1) Take 170kg of L-selenomethionine and 600kg of water into the reaction kettle, then add sodium carbonate to adjust the pH value to 7.0-7.5, then add 100kg of zinc chloride, stir until dissolved, and heat up to 80-90°C to carry out Chelation reaction, the reaction time is 2h;

[0033] (2) After the chelation reaction is completed, the temperature is lowered to 20-30°C for crystallization, and then solid-liquid separation is performed through the centrifugation process. The separated solids are washed with 30kg of pure water, filter cake and vacuum-dried at 80°C to obtain 145.86kg of selenium Zinc methionine substitute;

[0034] (3) The liquid obtained by centrifugation in step (2) is sequentially subjected to evaporation and concentration, filtration, cooling crystallizatio...

Embodiment 3

[0036] This example provides a preparation method for the formula (I) selenomethionine derivative (zinc selenomethionine) provided in the preparation example, which includes the following steps:

[0037] (1) Take 150kg of DL-selenomethionine and 600kg of water into the reaction kettle, then add potassium bicarbonate to adjust the pH value to 7.5-8.0, then add 100kg of zinc nitrate, stir until dissolved, and heat up to 80-90°C to carry out Chelation reaction, the reaction time is 1h;

[0038] (2) After the chelation reaction is completed, the temperature is lowered to 20-30°C for crystallization, and then solid-liquid separation is performed through the centrifugation process. The separated solids are washed with 30kg of pure water, filter cake and vacuum-dried at 80°C to obtain 150.62kg of selenium Zinc methionine substitute;

[0039] (3) The liquid obtained by centrifugation in step (2) is sequentially subjected to evaporation and concentration, filtration, cooling crystalli...

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Abstract

The invention discloses a preparation method of a selenomethionine derivative shown in a formula (I). The preparation method comprises the following steps of firstly, adjusting the pH (potential of hydrogen) value of a mixture of selenomethionine and water to 7.0 to 8.0, adding zinc salt, stirring and dissolving, heating to the temperature of 60 to 90 DEG C, and chelating for 0.5 to 4.0h; finally,cooling, crystallizing, centrifuging, washing, and drying, so as to obtain the selenomethionine derivative in the formula (I), wherein the molar ratio of the selenomethionine to the zinc salt is (2 to 3):1, and the mass of water is equal to 5 to 10 times of the mass of the zinc salt. The preparation method has the advantages that the selenomethionine and the zinc salt are chelated according to amolar ratio of 2:1 under the weak alkaline environment, so as to prepare the selenomethionine zinc with selenium and zinc double nutrient effects; the operation of the whole preparation process is simple, the mother liquid can be recycled and reutilized, the production of wastewater is avoided, and the preparation method is suitable for industrialized scale production.

Description

technical field [0001] The invention relates to zinc selenomethionine and a preparation method thereof, belonging to the technical field of selenomethionine derivatives. Background technique [0002] Selenium is one of the essential trace elements for animals, and selenomethionine is the most important form of existence in organisms, and it is also the exogenous selenium additive with the highest biological value. Selenomethionine is widely used in medical treatment, food health care, feed breeding and other industries because of its unique biological effects such as high-efficiency antioxidant, low toxicity, and high absorption and utilization. [0003] Zinc is also one of the essential trace elements in animals. It plays a wide range of physiological and biochemical functions in animals. As an essential component of more than 300 enzymes and proteins in animals, zinc plays a role in the growth and development, immune function, and Material metabolism and reproductive perf...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C391/00A23K20/20
CPCA23K20/30C07C391/00
Inventor 王斐英
Owner SICHUAN SINYIML BIOTECH CO LTD