It has been 112 years since scientists first discovered peptide, and 107 years since the first preparation of peptide from 18 kinds of amino acid composition.
So, what is a peptide? Polypeptide is a kind of small molecule high nutrient substance that can be completely absorbed by human cells. It has the advanced physiological functions of repairing cells, nourishing cells and activating cells. It can comprehensively increase human immunity and improve physical strength. Using the language of science, peptide is a kind of compound whose molecular structure is between amino acid and protein, which is linked by peptide bond. It is also the most active, easily absorbed and highly functional nutrient.
Dr Billis and Dr Stirling of University of London School of Medicine won the Nobel Prize in Physiology for their accidental discovery of polypeptide substances in the human body in an experiment. Five years later, Fischer, a famous German scientist who won the 1902 Nobel Prize in Chemistry, made breakthroughs in the research of proteins, amino acids and peptides. In 1907, he was the first to prepare a polypeptide composed of 18 amino acid molecules, which became an important scientific news of the time. Since then, it has also laid the biological mechanism of the peptide’s comprehensive action on the human body. He is also known as the “father of the world peptide.”
At present, there are nearly 100 kinds of peptides discovered by scientists, and the most prominent ones are yak bone small molecule collagen peptide, glutathione, marine fish oligopeptides and casein hydrolysates.
In terms of the classification of peptide materials, peptides are divided into two types: foodborne and iatrogenic. Food-derived peptides come from people’s daily food, extracted by modern science and technology, especially food-derived small molecular peptides also have a variety of physiological functions, such as enhancing immunity, anti-oxidation, auxiliary regulation of blood sugar, blood lipids, blood pressure, etc., especially suitable for the development of special dietary foods. Iatrogenic peptides are usually collected from glands and can be used in clinical medicine. In the field of peptides, endorphins and thymic peptides are common.
