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According to experts, collagen is simply understood as the main component of connective tissue in the human body, the most common protein in the body (one-fourth of total protein). For skin, in addition to the task of linking, this substance also creates elasticity. As we get older, the collagen in the skin is broken, resulting in loss of skin elasticity, firmness, swiftness and formation of wrinkles.

At this time, the skin starts to dry, tan in some areas exposed directly to the sun as the cheekbones, forehead. According to the study, collagen extracted from fish skin is much smaller than collagen extracted from other animal species such as pig skin or cow skin, so the collagen's ability to penetrate higher.

The scientists used two methods, acetic acid and the use of solvents in combination with enzymes. When exposed to temperatures below 39.5 ° C, collagen is not denatured in structure so it is easy to preserve. Currently, the research team is testing technology to extract collagen from skin and bones of tra and basa catfish for use in the food, pharmaceutical and cosmetic industries. If successful, this technology not only help processing waste from seafood processing plants, reduce environmental pollution but also increase the value for catfish.