There are many foods rich in collagen, such as chicken feet, pig tails, pig skins, pig feet, soft-shelled turtles, fish and so on. Especially in animal skin and cartilage, the content of collagen is higher.
1. Pig's feet, pig's skin and pig's bones all have a thick layer of gum, so they are soft to eat, elastic to eat and quite sticky. This is collagen. Collagen should belong to the protein family, and it is a biopolymer, which is composed of 18 amino acids except tryptophan and cysteine, and its content is very high. Collagen is the main component of human skin, bones, tendons, cartilage and blood vessels, and the proportion of collagen in skin is as high as 70%-80%, so collagen has good moisturizing, nourishing, brightening, firming, anti-wrinkle and repairing effects on skin.
2. In addition to common trotters and pigskins, foods rich in collagen also include beef tendon, chicken feet, chicken wings, chicken skin, fish skin, shark fin and cartilage. The "aspic" and "fish jelly" formed by cooking and cooling these foods are gels formed by boiling collagen into sol with water and cooling.
3. Of course, foods rich in collagen also include the most important fish. The structural composition of fish collagen is the closest to human body, which is the most suitable collagen for human body and has the highest absorption rate. The cartilage of deep-sea fish is also rich in fish collagen, so it makes sense that shark fin is used by ladies and gentlemen to nourish the skin.
In order to better release collagen in food, cooking methods such as stewing, boiling, burning and soup making are the best. It should be noted that while obtaining collagen through food supplement, we should also eat more foods with antioxidant function such as oranges, carrots, tomatoes and grapes to reduce the damage of free radicals to collagen in the body. At the same time, foods rich in collagen often contain a certain amount of fat, so it is necessary to cook with some vegetables that can reduce blood fat, such as onions, cauliflower, celery and pumpkin.