Defatting method of fat-containing protein powder and preparation method of compound amino acid chelated calcium

A technology of lipoprotein powder and protein powder, which is applied in the field of preparation of compound amino acid chelated calcium, can solve the problems of failing to meet product inspection standards, impure product taste, and low hydrolysis rate, so as to save the need for crushing and realize secondary Development and utilization, the effect of high degreasing rate

Inactive Publication Date: 2012-05-02
COFCO BIOTECHNOLOGY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the process of alkaline hydrolysis, most amino acids are damaged to varying degrees, and racemization occurs, so this method is basically not used in production; acid hydrolysis is generally hydrolyzed with hydrochloric acid under boiling conditions, then the hydrolyzate is cooled, and sodium carbonate Or sodium hydroxide to neutralize to pH 4.0-6.0, usually the hydrolysis temperature is 100-120 ℃, heating time is 2-24h, the limiting amino acid tryptophan is completely destroyed during acid hydrolysis, and there is dichloropropane in the hydrolyzate Alcohol and monochloropropanediol are by-p

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0043] Example 1

[0044] This example is used to illustrate the degreasing method of lipoprotein powder provided by the present invention.

[0045] Pass the soybean powder directly through a 50-mesh sieve, take 500g of the under-sieve (17.0% by weight of fat), add water for mixing to obtain a slurry with a concentration of 300.0g / L, and add 1.0g of tartaric acid to the slurry for acidification at a temperature of 60°C , The time is 120min, cooling down to room temperature. Then add 36g of degreasing agent (the molar ratio of sodium hydroxide to sodium bicarbonate is 5:1), and contact the water bath at 50°C for 5 minutes for degreasing. Centrifuge the product contacted with the degreasing agent at 4000r / min for 15min, and discard the supernatant. The defatted soybean meal was obtained, the lipid content of which was 2.43% by weight, and the degreasing rate was 85.7%.

Example Embodiment

[0046] Example 2

[0047] This example is used to illustrate the degreasing method of lipoprotein powder provided by the present invention.

[0048] Pass the cod fish meal directly through a 60-mesh sieve, take 500g of the sieve (21.0 wt% fat), add water to adjust the slurry to obtain a slurry with a concentration of 50.0g / L, add 24.0g of succinic acid to the slurry for acidification, and the temperature is 75 ℃, time 90min, cooling down to room temperature. Then 430g degreasing agent was added (the molar ratio of sodium hydroxide to potassium carbonate is 1:3), and the product was contacted in a water bath at 30°C for 10 minutes for degreasing. The product contacted with the degreasing agent was centrifuged at 4000r / min for 15 minutes, and the supernatant was discarded to obtain The fat content of defatted cod fish meal is 3.43% by weight, and the degreasing rate is 83.7%.

Example Embodiment

[0049] Example 3

[0050] This example is used to illustrate the degreasing method of lipoprotein powder provided by the present invention.

[0051] Corn gluten meal (a by-product in the process of producing citric acid, with a fat content of 10.0% by weight) is directly sieved (70 mesh), 500 g of the sieve is taken, and water is added for mixing to obtain a slurry with a concentration of 83.3 g / L. 15.0 g of citric acid was added to the slurry for acidification, the temperature was 90° C., the time was 40 minutes, and the temperature was cooled to room temperature. Then add 150g of degreasing agent (the molar ratio of sodium hydroxide to sodium carbonate is 3:2), degreasing in a water bath at 20°C for 30 minutes, centrifuge the product contacted with the degreasing agent at 4000r / min for 15 minutes, and discard the supernatant to obtain degreasing Corn gluten meal has a lipid content of 1.32% by weight and a degreasing rate of 86.8%.

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Abstract

The invention discloses a defatting method of fat-containing protein powder and a preparation method of compound amino acid chelated calcium. In the defatting method disclosed by the invention, one or more than one of alkali metal hydroxide, alkali metal carbonate and alkali metal bicarbonate is used for defatting the fat-containing protein powder, operation is simple and feasible, defatting rateis high, and content of amino acid chelated calcium in the compound amino acid chelated calcium product prepared by defatting protein powder raw material by adopting the defatting method is high and meets the national food grade requirement. Compared with the traditional defatting method, the defatting method disclosed by the invention requires no strict explosionproof safety device, operation process is simple, price of the required thermostatic equipment is greatly lower than that of carbon dioxide supercritical extraction equipment, and production cost is saved while potential production safety hazard is reduced. The method for preparing the compound amino acid chelated calcium disclosed by the invention has available raw materials and simple synthetic process, steps of smashing, deacidifying, decolorizing and recycling and distilling reagent are eliminated, and cost is reduced.

Description

technical field [0001] The invention relates to a method for degreasing lipoprotein powder and a method for preparing compound amino acid chelated calcium comprising the method. Background technique [0002] Amino acid chelated minerals are a new direction for the development of mineral supplementation for the human body. Pure metal ions are prone to react with anions in the human gastrointestinal tract to produce precipitation, which affects absorption; when metals and amino acids form a chelated amino acid salt, the metal It is not absorbed in the form of ions but in the form of chelates, and the absorption rate is greatly improved. [0003] At present, the raw materials for preparing compound amino acids are mainly waste protein resources, including plant cakes and industrial waste. The main by-product of citric acid production, corn gluten meal, has a protein content of 25-65% by weight, which is greater than that in soybean meal and cod meal. However, due to its rough ...

Claims

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Application Information

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IPC IPC(8): A23J3/14A23J3/32A23L1/30
Inventor 周勇满云荣玉凤陈影孙凤
Owner COFCO BIOTECHNOLOGY CO LTD
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