Preparation method for cysteamine chelation zinc

A technology for chelating zinc and cysteamine, which is applied in the preparation of cysteamine chelated zinc and cysteamine chelated zinc products, and can solve the problem of poor stability and the use of cysteamine hydrochloride coated Restrictions and other issues, to achieve the effect of low cost, conducive to large-scale popularization and application, and simple preparation steps

Inactive Publication Date: 2012-12-19
湖北广华生物有限公司
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Problems solved by technology

However, when the product coexists with trace elements in the feed, redox reactions will still occur, and at the s

Method used

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  • Preparation method for cysteamine chelation zinc
  • Preparation method for cysteamine chelation zinc

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Embodiment 1

[0022] A preparation method for cysteamine chelated zinc, which comprises the steps of: a, adding 150ml water in a 500ml three-neck bottle, then adding 24g of cysteamine hydrochloride with a mass percentage of 95%, and dissolving the cysteamine hydrochloride by ice water Control the temperature of the aqueous solution below 10°C, stir vigorously to dissolve for 5 minutes, and stir until the solution is clear and transparent; b, add 19g of zinc sulfate monohydrate with a mass percentage of 98%, stir and dissolve at low temperature for 5 minutes, make it completely dissolve, and the pH value is 2.5 to 3.0; c, slowly add 18g of 96% sodium hydroxide by mass percentage, adjust the pH to 9.5, so that the aqueous solution is a milky white turbid liquid; d, keep stirring at 9°C to 10°C for 2 hours; e, suction filter, and The filter cake was dried in an electric constant temperature drying oven at 80° C., and the crystals were crushed to obtain 24.2 g of off-white powdery crystals of cy...

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Abstract

The invention relates to a preparation method for cysteamine chelation zinc. The preparation method comprises the following steps of: (1) dissolving mercaptamine in water, controlling water temperature and stirring to sufficiently dissolve the mercaptamine in the water, and forming a transparent solution; (2) adding zinc sulphate monohydrate, and sufficiently stirring to completely dissolve; (3) slowly adding sodium hydroxide, adjusting a PH value to be 8-13 and enabling a reaction system to be a hoary muddy solution; (4) stirring and preserving heat for 2 hours at a room temperature; and (5) conducting vacuum filtration, stoving a filter cake in a 80-DEG C electrothermal constant-temperature dry box, grinding, and obtaining similar white powdery crystal, namely, finished products of the cysteamine chelation zinc. The preparation method for the cysteamine chelation zinc is low in cost, needs no expensive instruments and raw materials, and is simple in preparation step, easy to operate, low in raw material cost. The cysteamine chelation zinc prepared by the preparation method can be easily absorbed in intestinal tracts and is safe, free of stimulation, high in finished product yield and favorable for large-scale popularization and application.

Description

technical field [0001] The invention relates to a preparation method of cysteamine chelated zinc, in particular to a preparation method of a cysteamine chelated zinc product with good stability and easy absorption, and relates to the field of feed additives. Background technique [0002] Cysteamine (CS), also known as β-mercaptoethylamine, is equivalent to the decarboxylation product of cysteine ​​and is a component of acetic acid coenzyme A. It has various biological functions because of its active sulfhydryl and amino groups. It is a biologically active substance in animals and has important physiological functions. Its molecular formula is C2H7NS, its relative molecular weight is 77.15, and its chemical structural formula is HSCH2CH2NH2. The pure product is white crystal with a melting point of 99-100°C. It is easily soluble in water and alcohol. Due to the instability of its free base, it is generally made into hydrochloride C2H7NS·HCI, with a melting point of 70.2-70.7...

Claims

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Application Information

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IPC IPC(8): C07C323/25C07C319/12A23K1/16
Inventor 余四新黄丹清张敏
Owner 湖北广华生物有限公司
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