Peptide is a kind of compound with amino acid residues connected by amide bond, which are intermediate products of protein hydrolysis. The amide bond in peptide molecule is called peptide bond, which is generally the bond of one molecule of amino acid α-COOH with another molecule of amino acids α- NH2 is dehydrated and condensed to form one or two sexual ions.
There are a large number of active substances existing in the form of peptides in human body, which are involved in many fields such as nerves, hormones cell growth and reproduction. The importace of these peptides is to regulate the physiological functions of various systems and cells in the body to produce specific physiological effects. Peptides are important substances involved in a variety of cellular functions in the human body. Peptides can synthesize cells and regulate their functional activities. Peptides act as neurotransmitters in the human body to transmit information. Peptides can be used as a means of transport in the human body to transport various nutrients, vitamins, biotin, calcium and trace elements beneficial to the human body to various cells, organs and tissues of the human body. Peptides are important physiological regulator of human body. They can comprehensively regulate human physiological functions, enhance and give play to human physiological activities. They have important biological functions so that they have various applications in medical field.