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Method for industrially producing cystine by taking feathers as raw materials

A cystine and dilute hydrochloric acid technology, applied in chemical instruments and methods, preparation of organic compounds, organic chemistry, etc., can solve problems such as inability to meet supply, and achieve the effect of improving the yield of raw materials

Inactive Publication Date: 2009-12-09
陈士安 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In recent years, the annual consumption growth rate is about 10%, of which 50% is for export, mainly exported to the United States and Europe, and the export volume has increased by about 12% every year. At present, domestic production cannot meet the supply

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] 1) adding edible dilute hydrochloric acid to the prepared main ingredient feathers and then heating and hydrolyzing; wherein the ratio of edible dilute hydrochloric acid to feathers is 1:4, heating at 80°C for 4 hours; 2) centrifuging for the first time after hydrolysis Add edible alkali to the hydrolyzed separation liquid obtained after separation and heat it up. At this time, the neutralization liquid for the first time is obtained, crystallized on standing, and crystal 1 is obtained by separation for the second time; wherein the ratio of the first neutralization liquid and edible alkali is 1 : 8, heating temperature 80 DEG C, time 3 hours, standing for crystallization for 12 hours, centrifugation for the second time; 3) crystal body 1 is added with edible dilute hydrochloric acid and heated to dissolve into a solution, after decolorization, the decolorization solution is added with edible alkali for heating and neutralization, Static crystallization, separation to obt...

Embodiment 2

[0024] 1) adding edible dilute hydrochloric acid to the prepared main ingredient feathers and then heating and hydrolyzing; wherein the ratio of edible dilute hydrochloric acid to feathers is 1:4, heating at 95°C for 6 hours; 2) centrifuging for the first time after hydrolysis Add edible alkali to the hydrolyzed separation liquid obtained after separation and heat it up. At this time, the neutralization liquid for the first time is obtained, crystallized on standing, and crystal 1 is obtained by separation for the second time; wherein the ratio of the first neutralization liquid and edible alkali is 1 : 8, heating temperature 80 DEG C, time 3 hours, standing for crystallization for 12 hours, centrifugation for the second time; 3) crystal body 1 is added with edible dilute hydrochloric acid and heated to dissolve into a solution, after decolorization, the decolorization solution is added with edible alkali for heating and neutralization, Static crystallization, separation to obt...

Embodiment 3

[0026] 1) adding edible dilute hydrochloric acid to the prepared main ingredient feathers and then heating and hydrolyzing; wherein the ratio of edible dilute hydrochloric acid to feathers is 1:4, heating at 88°C for 6 hours; 2) centrifuging for the first time after hydrolysis Add edible alkali to the hydrolyzed separation liquid obtained after separation and heat it up. At this time, the neutralization liquid for the first time is obtained, crystallized on standing, and crystal 1 is obtained by separation for the second time; wherein the ratio of the first neutralization liquid and edible alkali is 1 : 8, heating temperature 80 DEG C, time 3 hours, standing for crystallization for 12 hours, centrifugation for the second time; 3) crystal body 1 is added with edible dilute hydrochloric acid and heated to dissolve into a solution, after decolorization, the decolorization solution is added with edible alkali for heating and neutralization, Static crystallization, separation to obt...

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PUM

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Abstract

The invention discloses a method for industrially producing cystine by taking feathers as raw materials, which comprises the following manufacturing process steps: (1). putting prepared feathers as main materials into edible diluted hydrochloric acid and then hydrolyzing; (2). carrying the primary separation to hydrolyzing mixed liquid; (3). adding alkali into primary hydrolyzing separation liquid; (4). stewing, crystallizing and separating the primary neutralizing liquid to obtain crystalline 1; (5). adding edible diluted hydrochloric acid solution into the crystalline 1 for dissolving, decoloring, alkali-neutralizing, crystallizing and separating to obtain crystalline 2; (6). adding edible diluted hydrochloric acid solution into the crystalline 2, decoloring, alkali-neutralizing, crystallizing and separating to obtain crystalline 3; and (7). drying the crystalline 3 to obtain the cystine. Compared with the prior art, the cystine and the manufacturing method thereof have the following advantages: A. dilute acid is used for catalyzing, heating, insulating and decomposing, thereby increasing the reaction time and shortening the production period; B. protein is thoroughly decomposed; C. the antioxidation capacity of the product by self is improved, and the retention period of the product is prolonged; and D. the production rate of raw materials is improved by 40 percent approximately compared with the traditional manufacturing technology.

Description

Technical field: [0001] The present invention relates to a method for industrialized production of cystine with feathers as raw materials, specifically a method of dilute acid catalysis, heating and decomposing feathers, so that the production raw materials are more extensive, the process is more simplified and efficient, and the product quality is significantly improved. Process for the industrial production of cystine. Background technique: [0002] The pros and cons of the method of industrially producing cystine from feathers basically depends on the level of content, but the process steps in the existing industrial production technology are unreasonable and cannot meet the requirements we need. Cystine is an essential substance for the human body. Amino acids cannot be synthesized in the human body and must be supplied from the outside. [0003] Cystine series products are in great demand in the market. The cystine consumed in medicine in my country is about 500 tons, ...

Claims

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Application Information

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IPC IPC(8): C07C323/58C07C319/22C07C319/26
Inventor 陈士安杨武领刘笃连
Owner 陈士安
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