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Method for industrially producing L-leucine by taking feathers as raw materials

A technology of leucine and feathers, 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 effects of extending shelf life, improving raw material yield, and shortening production cycle.

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

[0021] 1) adding edible dilute hydrochloric acid to the prepared main ingredient poultry feathers and then heating, wherein the ratio of edible dilute hydrochloric acid to poultry feathers is 1:4, and hydrolyzing after heating at 80°C for 4 hours; 2) after hydrolysis, Add edible alkali to the hydrolyzed separated liquid obtained for the first time and heat it to obtain the first neutralization liquid; wherein the ratio of the first neutralization liquid and edible alkali is 1:4, and the heating temperature is 80°C for 4 Carry out the second centrifugation after 1 hour; 3) Add edible alkali for the second time to neutralize the filtrate for the first time to neutralize, wherein the ratio of the second neutralization filtrate and edible alkali is 1:8. The heating temperature is 80°C, and the third centrifugation is performed after 2 hours; 4) The second neutralization filtrate is neutralized by adding edible alkali for the third time, and the third neutralization solution is obta...

Embodiment 2

[0023] 1) adding edible dilute hydrochloric acid to the prepared main ingredient poultry feathers and then heating, wherein the ratio of the edible dilute hydrochloric acid to poultry feathers is 1:4, and the heating temperature is 95° C. for 6 hours before hydrolysis; 2) after hydrolysis, the Add edible alkali to the hydrolyzed separation liquid obtained for the first separation and heat it to obtain the first neutralization liquid; wherein the ratio of the first neutralization liquid and edible alkali is 1:4, and the heating temperature is 95°C for one hour Then carry out the second centrifugation; 3) The first neutralization filtrate is neutralized by adding edible alkali for the second time, wherein the ratio of the second neutralization filtrate and edible alkali is 1:8. The heating temperature is ℃, and the time is 2 hours before the third centrifugation; 4) The second neutralization filtrate is neutralized by adding edible alkali for the third time, and the third neutral...

Embodiment 3

[0025] 1) adding edible dilute hydrochloric acid to the prepared main ingredient poultry feathers and then heating, wherein the ratio of edible dilute hydrochloric acid to poultry feathers is 1:4, the heating temperature is 88°C, and the hydrolysis is carried out after 6 hours; 2) after hydrolysis The hydrolyzate obtained through filtration is heated after adding edible alkali, and a neutralizing liquid is obtained at this time; wherein the ratio of the primary neutralizing liquid and edible alkali is 1: 4, and the heating temperature is 88 ° C for 6 hours before centrifugation; 3) The primary neutralization filtrate is neutralized by adding edible alkali for the second time, and the secondary neutralization liquid is obtained at this time; wherein the ratio of the secondary neutralization liquid and edible alkali is 1:8. The heating temperature is 95°C, and centrifugation is carried out after 4 hours; 4) The secondary neutralization filtrate is further filtered, and the third ...

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PUM

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Abstract

The invention discloses a method for industrially producing L-leucine by taking feathers as raw materials, which comprises the manufacturing process steps: (1). putting prepared feathers as raw materials into edible hydrochloric acid, and then heating and hydrolyzing; (2). carrying out the primary separation to the hydrolyzing liquid to obtain separation liquid; (3). adding edible alkali into the separation liquid, and heating and neutralizing to obtain neutralizing liquid; (4). carrying out the secondary separation and the second neutralization to the primary neutralizing liquid to obtain secondary neutralizing liquid; and (5). carrying out the third separation, the third neutralization, the fourth separation, the concentration, the crystallization and the drying to the secondary neutralizing liquid to obtain the L-leucine. Compared with the prior art, the L-leucine 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, thereby the technical difficulty that the protein is decomposed incompletely is solved; 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 invention relates to a method for the industrial production of L-leucine using feathers as raw materials, specifically a method of using dilute acid to catalyze and decompose feathers by heating, so that the production raw materials are more extensive, the process is more simplified and efficient, and the product quality is remarkable. Improved industrial production of L-leucine. Background technique: [0002] The pros and cons of the industrial production of L-leucine using feathers as raw materials basically depend on the level of content, but the process steps in the existing industrial production technology are unreasonable and cannot meet the requirements we need. L-leucine Acid is an essential amino acid for the human body, which cannot be synthesized in the human body and must be supplied from the outside. [0003] The market demand for L-leucine series products is large. The consumption of L-leucine in medicine in my country is about 500 ...

Claims

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Application Information

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IPC IPC(8): C07C229/08C07C227/28C07C227/40
Inventor 陈士安杨武领刘笃连
Owner 陈士安
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