Collagen peptides is a transparent, light yellow collagen extract. It consists of two or more amino acids. The molecular weight of the peptide and the different amino acid arrangement order are different. It is generally believed that peptides are precise protein fragments, and their molecules are only nanometer-sized, and are easily absorbed by the stomach, blood vessels and skin. The molecular weight of the collagen is 180-5000 Daltons. The molecular weight of the polypeptide which has not been processed and purified is less than 1000, and it is easily decomposed after use. The molecular weight of the polypeptide in the collagen is too large and difficult to absorb. As long as the molecular weight of the collagen peptide is between 180 and 3000 Daltons, it is easier to absorb.
Collagen peptides is an extracellular protein. It is a fibrous protein that is spirally twisted by three peptide chains. Its molecules accumulate in the extracellular matrix into a supramolecular structure. The molecular weight is 300 ku.
The most common structural feature of collagen peptides is the triple helix structure. It consists of three a-chain polypeptides, each of which is a left-handed helical structure. The three left-handed helical chains are intertwined into a right-handed helical structure, that is, the super-helix structure closes the unique triple helix structure of the collagen peptide, which makes the molecular structure very stable, and has low immunogenicity and good biocompatibility.
Collagen is a macromolecule, not easily absorbed by the skin. Collagen is insoluble, but collagen is hydrolyzed by the action of acid, alkali, heat, and enzyme to produce collagen hydrolysate (peptide). They have a very similar amino acid composition and content. Due to the disintegration and molecular weight of macromolecules, their solubility increases and they are soluble in cold water. It is precisely because of the large decrease in molecular weight and the sharp increase in water solubility that the hydrolysate is easily absorbed and utilized by the skin. Hydrolysate is a more desirable source of collagen than macromolecular collagen. By absorbing collagen hydrolysate, it replenishes and repairs abnormal collagen, allowing it to function normally and recovering.
These collagen hydrolysates have a special name —- collagen peptides. The absorption of collagen peptides makes the key to improving skin elasticity and eliminating wrinkles. After the collagen peptide is fully absorbed and utilized, it will synthesize skin collagen and play a certain cosmetic role. The hydrophilicity of collagen peptide is very good, which can provide many whitening, moisturizing and nourishing effects to the skin, thus achieving the purpose of improving skin texture and beauty. Due to the nature of collagen peptides, skin treated with collagen peptides can be improved and nourished for a long time, and can maintain optimal therapeutic effect for 5-10 years.
Collagen peptides can be actively and unobstructed, without digesting and making full use of them. And the average molecular weight of marine collagen peptides is smaller, even only 2-4 amino acid structures, far less than ordinary peptides.