The collagen in pig's trotters only exists in the top layer of skin, which is a layer of sticky gel at the junction of pig's trotters, pig skin and bones. This part tastes very elastic and Very sticky.

Collagen is the main component of human skin, bones, tendons, cartilage, and blood vessels. The proportion of collagen in the skin is as high as 70%-80%, which has good moisturizing, nourishing, and Skin brightening, skin tightening, anti-wrinkle, repair and other functions.

But the collagen content in pig's trotters is not as much as we imagined. Except for a small part of collagen contained in pig's trotters, there is a large amount of fat under the skin.

Furthermore, the collagen in pig's trotters is a typical incomplete protein. It does not match the collagen needed by the human body. The absorption and utilization rate of pig's trotters alone is low, let alone its digestion and absorption. It can then be converted into collagen that beautifies the skin.

Extended information:

Foods rich in collagen:

There are many foods rich in collagen, such as beef tendons, chicken feet, chicken wings, and chicken skin , fish skin, shark fin and cartilage, etc. The "meat jelly" and "fish jelly" formed after these foods are cooked and cooled are gels formed by boiling collagen with water into a sol and then cooling it.

Among them, the collagen structure of fish is the closest to that of the human body, and it is also the collagen that is most suitable for consumption and has the highest absorption rate. The cartilage of some deep-sea fish is also rich in collagen. Rich.

People's Daily Online - Issue 123: Eating pig trotters can replenish collagen. Wrong!

People’s Daily Online—The Year of the Pig is here! Pigs are full of treasures. Experts teach you how to eat them