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

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 ...

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-products, and because hydrochloric acid is highly corrosive, hydrolysis equipment must have strong corrosion resistance. In addition, the amino acid solution obtained by simple acid hydrolysis has a deep color, and subsequent decolorization treatment is required, so acid hydrolysis is in production The application in the method is greatly restricted; the enzymatic hydrolysis reaction conditions are mild, but the hydrolysis rate is too low, and most of the protein exists in the form of polypeptide after hydrolysis, which makes the product taste impure and cannot meet the product inspection standard