Hello everyone, I'm a nutritionist left left! Someone recently asked me, can eating pig's trotters and chicken feet supplement collagen? The answer is no, so why? This is related to the nature of proteins and the body's absorption capacity. The article I share with you today is one of the three major production nutrients - protein (*^▽^*).
edit
Add a picture annotation of up to 140 words (optional)
1. What is protein?
Protein is one of the essential nutrients of the human body and is the material basis of life, without which there is no life. Protein is the only source of nitrogen for the human body, and neither carbohydrate nor fat can replace protein.
Second, the classification of proteins?
(1) Classification according to nutritional value:
1, complete protein: contains a complete range of essential amino acids, sufficient quantity, appropriate proportion, not only can maintain the health of adults, and can promote children's growth and development of proteins, such as milk in casein, lactoprotein, egg albumin, egg phosphorus protein, meat in albumin, muscle protein, soybean protein in soybeans, wheat gluten in wheat, gluten in corn, etc.
2, semi-complete protein: contains a complete variety of essential amino acids, but some of the quantity is insufficient, the proportion is not appropriate, can maintain life, but can not promote growth and development of protein, such as wheat in the wheat in the wheat glutin protein.
3, incomplete protein: the types of essential amino acids contained are incomplete, neither can maintain life, nor can promote growth and development of proteins, such as corn gel protein in corn, animal connective tissue and meat skin in colloidal protein, pea in soy globulin and so on. It can be seen that the colloidal protein in pig's trotters and chicken feet is an incomplete protein, which is decomposed into small molecule amino acids in the human body, and then undergoes a complex biochemical reaction to synthesize the protein required by the human body, and cannot be targeted to supplement collagen.
(2) Classification according to food source:
1, animal protein: animal protein amino acid composition and human essential amino acid demand pattern is close, the essential amino acids contained in the body high utilization rate, also known as high-quality protein (meat, eggs and milk beans), of which, the egg protein amino acid composition and human protein amino acid pattern is the closest, but also as a reference protein.
2, plant protein: the nutritional value of plant protein is relatively low, cereals contain about 10% protein, protein content is not high, but because it is a staple food, it is still the main source of dietary protein. Among plant proteins, soybeans are the only high-quality proteins, and soybeans contain up to 36-40% protein, which is highly utilized in the body.
At least 1/3 of the protein consumed by adults throughout the day is at least 1/3 of the protein, and at least 1/2 of children.
The recommended intake of protein for adults is 1.16g/kg.day, according to energy calculations, protein intake should account for 10-12% of total energy, children are 12-14%, and the recommended protein intake of adult men and light manual workers proposed by the Chinese Nutrition Society is 65g/day, and women are 55g/day.
3. How to supplement collagen?
The synthesis of collagen requires VC participation, vitamin C deficiency, collagen can not be synthesized normally, resulting in cellular connectivity disorders. Therefore, when we eat normally, when we consume high-quality protein, we can eat it with VC-rich vegetables and fruits to promote the absorption of collagen!
Fourth, how to improve the utilization rate of protein?
Two or more kinds of food protein are mixed and eaten, and the essential amino acids contained in it complement each other and complement each other to achieve a better proportion, thereby improving the utilization rate of protein, also known as protein complementarity. So how do you match it? After experimental research, the utilization rate of animal and plant mixed consumption is improved compared with that of pure plant mixed protein. Such as the following:
1. Corn, flour and soybean mixed edible (soybean corn flour nest head);
2. Eight treasure porridge cooked with coarse grains and beans;
3, red bean rice, wheat noodles, red bean buns, soybean wheat noodle cake.