What's the difference between collagen extracted from scales and skins
Collagen is the closest substance to our life. Usually we cook pork foot soup and take it out after putting it in the refrigerator. It will be found that it coagulates into a gelatinous substance, which is the result of rich collagen in pork foot. Faced with the overwhelming advertising of beauty products, does collagen really have the function of beauty and skin care? Where does collagen come from? What's the difference between them?
Why does collagen have the function of beauty and skin care?
Collagen is the most important structural protein in human structure and tissue. It is rich in glycine, proline, hydroxyproline and other amino acids needed by human body. Collagen mainly exists in human skin, bone, eyes and other parts. It accounts for about 30% of the protein in human body. At the same time, collagen is a substance that keeps the body young and prevents aging. For example, 70% of our skin components are composed of collagen. With the growth of age, collagen will gradually lose. When collagen in the dermis of the face is oxidized and broken, the supporting effect on the epidermis disappears. This causes uneven collapse, and wrinkles are created. Supplementary collagen can delay skin dryness, wrinkles, relaxation and inelasticity. For example, the traditional collagen health product "E-gelatin" is mainly made from donkey skin containing collagen. It is produced by special technology and has a high collagen nourishing and health function. Therefore, collagen has a high effect in the field of cosmetology and skin care. Reasons for extensive application.
Why extract collagen from scales and skins?
Collagen, a large molecule protein, exists mainly in animal connective tissue. It accounts for 25% to 30% of the protein in mammalian body, which is equivalent to 6% of body weight. Cattle and pigs occupy a large proportion in global livestock farming. China is a big consumer country in the world, but the collagen extracted from pork is large. The application in Islam and other areas has been limited. At the same time, the occurrence of mad cow disease, foot-and-mouth disease, avian influenza and other diseases has also raised doubts about the safety of mammalian collagen and its products. However, many marine organisms, such as fish scales and skins, account for more than 80% of their protein content. They have the advantages of low cost and safer development. Therefore, they are gradually turning to extracting collagen from marine organisms.
What's the difference between collagen extracted from fish scales and skin? That's better?
Source Difference: Collagen from freshwater fish mainly comes from freshwater fish. Compared with marine fish, freshwater fish has the advantages of large scale and easy collection. Collagen is extracted by collecting scales and drying them. According to statistics, global tilapia production in 2014 was about 6.3 million tons, and Chinese tilapia production was 1.45 million tons, so freshwater tilapia was the main source of fish scale collagen.
Fish skin collagen mainly comes from marine fish. Compared with freshwater fish, the scales of marine fish are very small and adhere to a thin layer of fish skin. It is impossible for fish processing plants to separate the scales separately. Therefore, the source of fish skin must be extracted from deep-sea fish, and the source of fish scales must be extracted from freshwater cultured fish.
Processing distinction: The extraction process of fish skin is simple, only the normal process of soaking, degreasing, feeding, sterilization, enzymatic hydrolysis, concentration and drying is needed. The extraction process of fish scale is relatively complex, because the fish scale contains ash powder, not demineralized or demineralized will lead to the content of collagen powder is too high, collagen powder will be very turbid after brewing. It must be demineralized and demineralized by soaking in concentrated hydrochloric acid for 8 hours, but this process will affect the quality of collagen.
Freshwater tilapia abuse hormones and antibiotics in artificial culture. However, marine fish live in the deep sea and are in the pure natural food chain without pollution. There are no abuse of antibiotics in marine fish. Secondly, the extraction process of fish skin is simple, and the extraction process of fish scales is complex, which affects the quality of collagen. Through the above analysis, the fish skin collagen is superior to the fish scale collagen in all aspects. It has more safety and high purity, which is in line with the public's pursuit of green and healthy concept.