Among all foods, eggs are mainly protein, and protein in eggs has the greatest nutritional value. The amino acid pattern of protein in whole egg is closest to that of protein in human body, which is easy to digest and absorb. Essential amino acids are highly utilized by human body, and their biological value can reach 95%. In experiments, protein in eggs is often used as a reference for protein. Reference protein refers to the standard protein that can be used to determine the quality of other proteins. On the other hand, the content of one or more amino acids in food is low, which can't meet the needs of protein synthesis, so other essential amino acids can't be used normally in the body, and the nutritional value of protein is reduced. These amino acids are called restricted amino acids. In order to improve the nutritional value of plant protein, two or more foods are often mixed together to improve the nutritional value of protein in the diet. These different foods are complementary to the lack of essential amino acids, which is the so-called complementary effect of protein. For example, meat and soy protein can make up for the lack of lysine in rice flour and protein. Eggs, milk, fish and soy protein are all called high-quality protein. Protein is divided into animal protein and plant protein. Nutritionists advise people to appropriately increase the intake of protein in animals and plants. Fish, shrimp, milk and eggs are preferred among animal proteins, and soybeans are preferred among plant proteins.
Protein plays an irreplaceable role in human health. In our daily diet, what kind of protein we eat and how much we eat are very important, especially for people with various diseases. Suffering from certain diseases, the intake of protein in food should be restricted, mainly for the following groups. 1. Patients with renal insufficiency, due to renal insufficiency, lead to the accumulation of metabolites in the body, resulting in azotemia. Protein's metabolism needs to be excreted through the kidneys. When renal function is impaired, the accumulation of metabolic waste will aggravate renal failure, so such people should eat a low-protein diet. 2. People with liver dysfunction, such as liver cirrhosis with elevated blood ammonia, will have liver cell damage and elevated blood ammonia, leading to mental disorders and even hepatic coma. At this time, the supply of protein should be limited, especially animal protein. Meat produces the most ammonia, followed by eggs and milk. You can eat some milk and some plant proteins. 3. protein allergic people, some people with physical allergies, will have symptoms such as redness, itching, eczema, abdominal pain and diarrhea after eating a lot of protein. Such people should avoid eating a large amount of food with high protein content at one time.