Antarctic krill flavor peptide powder and preparation method thereof

Abstract

The invention relates to the technical field of food processing, in particular to an Antarctic krill flavor peptide powder and a preparation method thereof. It includes the following steps: dissolving shrimp powder; adding flavor protease and composite protease; adding papain after four hours of enzymatic hydrolysis; adding flavor protease and aminopeptidase for six hours after secondary enzymatic hydrolysis, and continuing enzymatic hydrolysis for two hours; The supernatant was cooled to room temperature; 10% calcium hydroxide was added for defluorination, then the pH was adjusted to 7-8 with phosphoric acid, and the supernatant was taken after centrifugation; the supernatant was debittered by adsorption, and the protein peptides were debittered. The concentration is 20%, the amount of adsorbent is 15%, the adsorption temperature is 80°C, and the adsorption time is 5-10min; the debittered concentrate is spray-dried to obtain Antarctic krill flavor peptide powder. The present invention obtains an Antarctic krill flavored peptide powder with the highest enzymatic hydrolysis degree and the least bitterness by rationally selecting the type and enzymatic hydrolysis time of the composite protease, and optimizing the enzymatic hydrolysis conditions.

Description

Technical field: [0001] The invention relates to the technical field of food processing, in particular to an Antarctic krill flavor peptide powder and a preparation method thereof. Background technique: [0002] Antarctic krill (Euphausiasuperba), Arthropoda, genus Krill, is a species of krill that lives in the Antarctic waters of the Southern Ocean. Antarctic krill is rich in resources, estimated to be hundreds of millions of tons, with huge potential for development and utilization. Antarctic krill is rich in high-quality protein, with rich amino acid composition, complete amino acids, and high digestibility. Chen et al. pointed out that the content of amino acids in protein in Antarctic krill can meet the WHO1985 recommendation for adult protein intake In addition, Antarctic krill is also rich in a variety of mineral elements, which can meet the needs of the human body. Therefore, the development of Antarctic krill is an inevitable development trend in the food industry....

AI Technical Summary

Problems solved by technology

[0004] However, the fluorine content in Antarctic krill is extremely high. The fluorine content of the whole shrimp is 1102-1432mg / kg, the shrimp shell is 3828-4278mg / kg, and the shrimp meat is 178-285mg / kg. According to the regulations in GB4809-1984, the fluorine content of fish should be less than 2.0 mg / kg, but the fluorine content of fresh Antarctic krill enzymatic hydrolyzate was measured and found to be much higher than this standard

Images