Selenium-threonine and preparation method and application thereof
A technology for finished products of threonine and selenium, which is applied in the fields of application, cyanide reaction preparation, chemical instruments and methods, etc., can solve the problems of difficult solid threonine solubility, complicated operation process, and low biological potency, and achieve Improved feed remuneration, improved growth performance, and high biological potency
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Embodiment 1
[0026] A threonine selenium finished product of the present invention is prepared through the following steps: firstly open the nitrogen valve to replace the air in the reactor, then under the protection of nitrogen, first take 23.74g threonine and put it into a container filled with 100g reaction water. Fully stir in the reactor, then drop into 5.53g of selenium dioxide, adjust the pH value of the reaction mixture to 6.2 with sodium hydroxide at a temperature of 90°C, react for 2.5 hours under normal pressure conditions, then extract the reaction product with ethanol for 20 minutes, The volume ratio of ethanol to the reaction product is 10:1, and the extracted precipitate is dried in a flash at 120° C., crushed and then prepared to obtain the finished product of threonine selenium.
[0027] Gel filtration chromatography (GB / T 13080.2-2005) is used to detect the chelation rate in the finished product of the above reaction products, and the values are all above 80%.
[0028] ...
Embodiment 2
[0034] A threonine selenium finished product of the present invention is prepared through the following steps: firstly open the nitrogen valve to replace the air in the reactor, then under the protection of nitrogen, first take 198Kg threonine and put it into the reaction tank containing 1000Kg reaction water Fully stir in the kettle, then drop into 46Kg selenium dioxide, adjust the pH value of the reaction mixture to 6.4 with sodium hydroxide at a temperature of 90° C., react for 2 hours under normal pressure conditions, then send the reaction product to the concentration tank. kgf / cm 2 The vacuum degree and temperature are 90°C and vacuum concentration for 45 minutes. After the product is viscous, the concentrate is fed and put into a tray, flashed and dried at 110°C, and crushed to prepare the finished product of threonine selenium.
[0035] Gel filtration chromatography (GB / T 13080.2-2005) is used to detect the chelation rate in the finished product of the above reaction p...
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