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Method for preparing compound amino acid

A compound amino acid and concentrated hydrochloric acid technology, which is applied in protein food processing, animal protein processing, food science, etc., can solve the problems of shortening working hours, recovery and corrosion of hydrochloric acid in the process, and achieves the effect of less pollution

Inactive Publication Date: 2019-08-06
南通普悦生物医药有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] A disclosed production process for producing L-cystine using hair as a raw material. The improved feature is that acid recovery is set up to reduce costs and shorten working hours. The recovery of hydrochloric acid in this process has serious corrosion.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] The preparation method of compound amino acid of the present invention comprises the following steps:

[0023] (1) Washing the protein material to remove impurities, the protein material is selected from animal hooves or animal hair, adding 5 times the water of the protein material and cooking to obtain a cooking liquid;

[0024] (2) Mix the cooking liquid and sulfuric acid, put them into the reaction kettle in a ratio of 3:1, keep at 110°C, cook for 15 minutes, wait until the temperature is cooled to below 45°C, crush and sieve the protein raw materials, add protein hydrolysis Enzyme, enzymolysis temperature 35°C, enzymolysis reaction solution pH value 5, enzymolysis time 3h, to obtain enzymolysis solution;

[0025] (3) adding humic substances to the enzymolysis solution for 15 hours of catalysis, under aerobic regulation, the relative humidity is 80%, to obtain a fermentation solution;

[0026] (4) In the fermented liquid, add concentrated hydrochloric acid, the mass...

Embodiment 2

[0032] The preparation method of compound amino acid of the present invention comprises the following steps:

[0033] (1) Wash the protein material to remove impurities, the protein material is selected from animal hooves or animal hair, add 7 times the water of the protein material, and cook to obtain a cooking liquid;

[0034] (2) Mix the cooking liquid and sulfuric acid, put them into the reaction kettle in turn at a ratio of 4:1, keep at 115°C, cook for 20 minutes, wait until the temperature is cooled to below 45°C, crush and sieve the protein raw materials, add protein hydrolysis Enzyme, the enzymolysis temperature is 40°C, the pH value of the enzymolysis reaction solution is 7, and the enzymolysis time is 4 hours to obtain the enzymolysis solution;

[0035] (3) adding humic substances to the enzymolysis solution for 18 hours of catalysis, under aerobic regulation, the relative humidity is 83%, to obtain a fermentation solution;

[0036] (4) In the fermented liquid, add ...

Embodiment 3

[0042] The preparation method of compound amino acid of the present invention comprises the following steps:

[0043] (1) Wash the protein material to remove impurities, the protein material is selected from animal hooves or animal hair, add 10 times the water of the protein material and cook to obtain a cooking liquid;

[0044] (2) Mix the cooking liquid and sulfuric acid, put them into the reaction kettle one by one in a ratio of 5:1, keep at 120°C, cook for 30 minutes, wait for the temperature to cool below 45°C, crush and sieve the protein raw materials, add protein hydrolysis Enzyme, the enzymolysis temperature is 45°C, the pH value of the enzymolysis reaction solution is 9, and the enzymolysis time is 5 hours to obtain the enzymolysis solution;

[0045] (3) adding humic substances to the enzymolysis solution for 20 hours of catalysis, under aerobic regulation, the relative humidity is 85%, to obtain a fermentation solution;

[0046] (4) In the fermented liquid, add conc...

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Abstract

The invention discloses a method for preparing compound amino acid, wherein a protein raw material is steamed by adding water to obtain digestion liquor; the digestion liquor and the sulfuric acid areplaced in a reaction kettle, and after cooling, a proteolytic enzyme is added, and a humic substance is added to a humics for catalysis to obtain a fermentation broth; in the fermentation broth, concentrated hydrochloric acid is added and hydrolyzed for 10 to 12 hours; sodium sulphate is added to the fermentation broth after acid hydrolysis to neutralize the material to a pH value of 5-7, and then the material is filtered; a filtrate is centrifuged in a centrifuge, and a supernatant is spray-dried to prepare the compound amino acid powder. The protein material is processed through pre-treatment to facilitate subsequent enzyme treatment, acid treatment is carried out, the cellulose and protein in the raw materials are hydrolyzed and then subjected to enzymolysis to obtain an enzymatic hydrolyzate, concentrated hydrochloric acid is added to the fermentation broth, and no untreated raw material in the fermentation broth can be acid-decomposed, the acid treatment is used twice, which doesnot cause excessive waste of acid, at the same time, a neutralization reaction is carried out by adding sodium carbonate, the pH is adjusted, the pollution is small, finally, the centrifugal separation is carried out, the prepared compound amino acid is non-polluting and non-toxic, and meets the requirements of environmental protection and low carbon.

Description

technical field [0001] The invention relates to a preparation method of amino acid, in particular to a preparation method of compound amino acid. Background technique [0002] Amino acid hydrolysis technology has always been a research hotspot. At present, there are mainly two methods: hydrolysis and enzymatic method. A disclosed preparation method of compound amino acid powder, patent number: CN200610031424.X, acidifies and hydrolyzes protein, puts hydrolyzed protein and acid into a reaction kettle, heats and stirs to obtain a hydrolysis reaction solution, pours the above hydrolysis reaction solution into neutralization Add alkali in the pool to neutralize the hydrolysis, neutralize the acid, and then filter to remove the slag to obtain the filtrate; decolorize; then filter into the concentration pot; concentrate and dry, concentrate the above-mentioned solution that has been finely filtered into the concentration pot, and finally spray Dried to get the finished product. ...

Claims

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Application Information

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IPC IPC(8): A23J1/10A23J3/04A23J3/34C12P13/04
CPCA23J1/10A23J3/04A23J3/341C12P13/04
Inventor 王林
Owner 南通普悦生物医药有限公司
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