Collagen peptide composition and food or beverage containing the same

Abstract

The object is to discover a collagen peptide composed of an oligopeptide having a higher ability of being transported into the blood compared to a conventional collagen peptide, and to provide a food or beverage having the collagen peptide blended therein. Disclosed is a collagen peptide composition produced by digesting a collagen or gelatin with a protease. The collagen peptide composition comprises 70 to 100 wt% of a peptide having a molecular weight of 500 to 3000 inclusive, less than 10 wt% of a peptide having a molecular weight of less than 500, and less than 20 wt% of a peptide having amolecular weight exceeding 3000, wherein the ratio of glycine in the N-terminal amino acid residues of the peptides contained in the composition is 33 to 65 mol% inclusive.

Description

technical field [0001] The present invention relates to a collagen peptide composition, and more specifically, to a collagen peptide composition composed of an oligopeptide excellent in blood migration, and a food or drink containing the collagen peptide composition. Background technique [0002] Collagen is one of the proteins constituting the dermis, ligaments, tendons, bones, cartilage, etc., and is a main component of the extracellular matrix of multicellular animals. Collagen exists in skin, blood vessels, internal organs, bone tissue, etc., and accounts for about 30% of the proteins that make up the body. 70% of the dermis in the skin is composed of collagen, and the fascia (fascia) that wraps various muscles is also composed of collagen. [0003] Collagen aggregates three polypeptide chains (α chains) with a molecular weight of about 100,000 having a repeating structure of Gly-X-Y (X and Y are amino acids other than Gly), forming a helical structure. Collagen has am...

AI Technical Summary

Problems solved by technology

In this publication, an in vivo dynamic test of a tripeptide labeled with a radioactive isotope was carried out, but it is unclear whether the main body of the radioactivity distributed in plasma and in various tissues is the unchanged tripeptide, dipeptide, or free amino acid.

Moreover, since the enzyme used to prepare the tripeptide is also collagenase, it is actually difficult to use it in food in terms of safety

Moreover, the peptides constituting the tripeptide mixture contained in the collagen-promoting active agent disclosed in this publication are all peptides whose N-terminal amino acid is glycine (Gly-X-Y), and the ratio of glycine in the N-terminal amino acid of the tripeptide in the mixture is adjusted. Proportion not recorded

[0008] Furthermore, in Patent Document 8, it is described that a collagen peptide composition containing a large amount of peptides with a molecular weight of 400 to 3,000 exhibits an excellent feeling of use and permeability to the skin when blended into cosmetics and pharmaceuticals for the skin. There is no description of the evaluation of migration in the blood, the adjustment of the proportion of glycine in the N-terminal amino acid of the peptide in the composition

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