Method for extracting peanut polypeptide from peanut meal

Abstract

The invention discloses a method for extracting peanut polypeptide from peanut meal. The method comprises the following steps of peanut meal degreasing, neutralization, drying, crushing, suspension preparation, heating for enzymolysis by a ceramic electric heating rod, centrifugal filtration and vacuum drying. Through the steps, the peanut polypeptide used as food additives can be obtained from the peanut meal. By using the technology, the peanut meal is separated and is sufficiently utilized. In the technical scheme, a ceramic electric heating wire heating enzyme is used for replacing the conventional microwave enzymolysis method; the problem of too high cost during the mass extraction of the polypeptide is solved; a method for extracting the peanut polypeptide through enzymolysis after the degreasing and neutralization treatment on the peanut meal is created; the influence caused by grease in the later stage operations of wall breaking, enzymolysis and filtering on the formed polypeptide is favorably reduced; the quality of a finished product of the peanut polypeptide is improved. The scheme is used as the technical scheme for mass extraction of the peanut polypeptide; the production efficiency is improved; the cost is reduced; the process is simple; the operation is easy.

Description

technical field [0001] The invention relates to the field of protein polypeptides, in particular to a method for extracting peanut polypeptides from peanut meal. Background technique [0002] The residue of peanuts after oil and fat extraction is called peanut meal, which is very rich in protein, and peanut peptides can be obtained by enzymatic hydrolysis of it. Studies have shown that the molecular weight of peanut peptides is 130-5000 Dalton, and the oligopeptides are mainly normally distributed between 500--2000 Dalton. It is in the form of powder, no agglomeration, no impurities, no peculiar smell, and has the original faint fragrance of peanuts. It has good water solubility and water holding capacity, and can be completely dissolved under the condition of PH2-10. Peanut protein active peptide can be fully integrated with other food ingredients, and maintain their own physical and chemical nutritional characteristics. The amino acid composition of peanut protein activ...

AI Technical Summary

Problems solved by technology

[0004] At present, the mainstream method for extracting peanut polypeptides is to use microwave enzymatic hydrolysis to extract polypeptides. During the extraction process of peanut polypeptides, oil will affect the quality of the extracted polypeptides. The cost is high, and the cost is relatively high when a large amount of peptides are extracted; at the same time, there is no clear conclusion on whether microwaves will have a negative impact on food at this stage

[0005] The peanut meal is degreased and then heated by a ceramic heating wire for enzymatic hydrolysis. There is no relevant report in the public information