The classification of active peptides can be divided according to the source of raw materials and health function. The categories by raw materials are:

Milk peptide is mainly produced by the hydrolysis of casein and whey protease in animal milk. It is easier to dissolve in water and be digested and absorbed by human body than the original protein, and it is acid resistant, heat-resistant and low osmotic pressure. It is the health food material with the largest demand and the widest application in the active peptide.

Soybean peptide was prepared by hydrolysis of soybean protease. It has the functions of low antigenicity, inhibiting cholesterol, promoting lipid metabolism and fermentation. It can be used in food to rapidly supplement protein sources, eliminate fatigue and as a bifidobacterium proliferation factor.

Corn peptide was hydrolyzed by corn protease. It has the functions of anti fatigue, improving the nutrition of patients with liver, kidney and gastrointestinal diseases, promoting alcohol metabolism and being used as sobering food.

Pea peptide is produced by enzymatic hydrolysis of pea protein. Mild taste, low price, can be used in infant formula milk powder.

Ovalbumin was hydrolyzed by ovalbumin. It is easy to digest and absorb, low antigen, heat-resistant, etc. it can be used in flowing food, nutrition food or pastry.

The peptide produced by livestock is produced by enzymolysis of the protein in the muscle, viscera and blood of livestock. For example, the peptide produced by enzymolysis of defatted beef contains high branched amino acids and carnitine, which is a low calorie protein supplement. The peptide produced by enzymolysis, decolorization, deodorization and ultrafiltration of fresh pig liver can be used as an iron promoting absorbent for infant food, beverage, pastry, etc; Haemoglobin peptide was obtained from pig blood by enzymolysis, which can be used in all kinds of food.

Peptides obtained from various fish peptides, such as sardine peptides, are angiotensin-converting enzyme inhibitory peptides, which contain no bitter taste and can be used to produce health food or preparations for preventing and curing hypertension.

Silk fibroin peptide the low peptide obtained from silk fibroin by enzymatic hydrolysis has many functions, such as promoting alcohol metabolism, reducing cholesterol, preventing dementia, etc. it can be used in sobering up food and special health food.

The compound peptide, which is made from the mixture of animal, plant, aquatic product, animal and other protein by enzymatic hydrolysis, has the function of improving lipid metabolism and can be used in all kinds of health food.

According to the functional classification of active peptides, there are digestible and absorbable peptides: mainly low peptides such as dipeptides and tripeptides, which are faster than amino acids in digestion and absorption, with high absorption rate, low antigenicity, low osmolality, and won't cause adverse reactions such as allergy and diarrhea. They are suitable for nourishing food for patients with low gastric function, postoperative recovery of digestive tract diseases, endurance athletes, infants and the elderly.

Antimicrobial peptides, also known as antimicrobial peptides, are widely distributed in nature and exist in prokaryotes and eukaryotes. For example, plants, microorganisms, insects and vertebrates can be synthesized rapidly when they are infected by microorganisms, and can also be produced by gene cloning technology, such as nisin, which has a strong bactericidal effect. Antimicrobial peptides are mainly used for food preservation.

Morphine tablet peptide is derived from the isolation of casein, whey protein and lactoglobulin in animal milk and the hydrolysis of hemoglobin and plant protease. It is the earliest food protein peptide, which has the functions of analgesia, regulating human mood, respiration, pulse, body temperature, digestive system and endocrine.

Morphine like antagonistic peptide was isolated from bovine milk k-casein by trypsin, which was antagonistic to morphine like peptide and had the function of inhibiting the activity of ACE and smooth muscle contraction.

Angiotensin-converting enzyme inhibitory peptide (ACEI peptide) is isolated from natural snake venom and hydrolysate from bacterial collagenase, which hydrolysates collagen or casein, soybean, corn, sardine, krill protein and other enzymes. It is an angiotensin-converting enzyme inhibitor, and has a significant effect on lowering blood pressure. ACEI peptide is a new kind of peptide. Its low peptide is easy to digest and absorb. It can promote cell proliferation, improve capillary permeability and so on. It can be used as a functional food base for blood pressure reduction.

The plant protein, such as soybean, which can inhibit cholesterol action, is made by pepsin or pancreatin. It has high hydrophobicity, can stimulate the secretion of thyroxine, promote the bile acidification of cholesterol, increase the excretion of cholesterol, and is used as a health food to reduce cholesterol.

The CPP is mainly made from casein in animal milk by trypsin. It can promote the absorption of calcium and iron. It can be used in children's and old people's food, lactose resistant yoghurt and other products.

Defensive functional peptides such as glutathione (GSH) are produced by microbial cells or enzymes, and can also be reconstituted by Escherichia coli. They have many important physiological functions.

Bitter peptide is the bitter substance in the enzymatic hydrolysate of protein, which is composed of some hydrophobic genes and hydrophobic amino acids. It can be adsorbed by activated carbon or further hydrolyzed by some end peptidase, Lactobacillus, Saccharomyces cerevisiae and other microorganisms. After the bitterness is removed or alleviated, its essential amino acid content is higher than that in the enzymatic hydrolysate, and its nutritional value is greater, so it can be used as food nutrition enhancer.

The prevention and treatment peptide of hepatic encephalopathy, such as f-value oligopeptide, is produced by the hydrolysis of animal or plant protease, which is used for the prevention and treatment of hepatic encephalopathy drugs, liver protection health food or anti fatigue food.

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Chengdu Shengnuo Biotechnology Co., Ltd. has "Chengdu polypeptide drug engineering technology research center" in Chengdu, mainly engaged in polypeptide, polypeptide drug and beauty peptide research. Our zero defect has passed the FDA certification, and now it has become the first-class professional peptide drug and product development, technology transfer, technical service and peptide drug industry in the scale production and export of China's parks.