How much protein can the body absorb at one time? 5

I don't know once, but I still know the amount of absorption in a day:

1. The human body's demand for protein:

In the supply standard recommended by the Chinese Nutrition Society, men aged 18-45 (weighing 63 kg) who are engaged in very light physical labor should have a daily protein supply of 70 grams; In the case of extremely heavy physical labor, it rises to 110 grams. In people with special physiological conditions, the amount of protein supply also changes. For example, pregnant women who are 4-6 months pregnant should increase their daily protein intake by 15 grams from the original amount; For pregnant women and lactating mothers who are 7-9 months pregnant, add 25 grams on the basis of the original amount.

For patients, adjustments should be made on the basis of the normal maintenance amount, considering the characteristics of their disease, disease resistance and tissue repair needs.

2. Absorption of protein by the human body:

In general, it refers to the absorption of no more than two eggs per day, in fact, eating more can not absorb so much, but may absorb too much cholesterol and so on, and health problems will occur for a long time.

It depends on what age group the landlord is eating.

Everyone's life situation, metabolic type, and goals are different, and what is needed is to define a standard according to each person's needs and goals.

Nutritionists say that protein supplementation depends on two aspects:

One is age, young people 1 2 eggs a day, older people 3 4 eggs a week, and it is best to eat only half an egg yolk;

The second is the amount of exercise, which is generally considered to be a gram of protein per kilogram of body weight per day for healthy adults. 18 45-year-old male, engaged in very light physical labor, daily protein supply of 70 grams; For extremely heavy physical labor, 110 grams are required.

Excess protein can not be absorbed and utilized by the human body, on the contrary, it will increase the burden on the liver, kidneys and other organs, and a long-term high-protein diet will also lead to abnormal liver and kidney function, and the appearance of "protein poisoning syndrome", which is manifested as abdominal distention, dizziness, weakness of limbs and other symptoms.

1. Beans: bean curd, containing grams of protein per 100 grams; Soybeans, with grams of protein per 100 grams.

2. Mountain products: dried mushrooms, containing grams of protein per 100 grams; Shiitake mushrooms, which contain grams of protein per 100 grams.

3. Animal offal: pork liver, containing grams of protein per 100 grams; Pig blood, sheep blood, beef liver, sheep liver, beef tendons, pig skin, etc. also contain a lot of protein.

4. Meat: lean beef, containing protein grams per 100 grams; Sauced beef, which contains 32 grams of protein per 100 grams, and braised beef, which contains 25 grams of protein per 100 grams.

5. Poultry: chicken, containing grams of protein per 100 grams.

6. Aquatic products: herring, containing protein grams per 100 grams; hairtail, containing grams of protein per 100 grams; Yellow croaker, with grams of protein per 100 grams.

7. Eggs: Eggs contain protein grams per 100 grams, and the protein contained in eggs is one of the best proteins in natural food.

In the commonly used food per 100 grams, meat contains 10-20 grams of protein, fish contains 15-20 grams, whole eggs contain 13-15 grams, beans contain 20-30 grams, cereals contain 8-12 grams, vegetables and fruits contain 1-2 grams "Animal food contains more than plant food, legumes contain a lot, and the quality is not worse than animal food." There are three points to judge the quality of protein: (1) The more thoroughly the protein is digested and absorbed by the human body, the higher its nutritional value.

The digestibility of whole soybeans is 60%, which can be increased to 90% after being made into tofu and soy milk, and the absorption rate of other proteins can also be improved after cooking, such as 98% for milk, 93% for meat, 98% for eggs, and 82% for rice. (2) After being absorbed by the human body, the degree of utilization of protein varies from high to low, and the higher the degree of utilization, the higher its nutritional value. The degree of utilization is called the physiological value of protein.

The physiological value of commonly used food protein is as follows: 94% of eggs, 85% of milk, 83% of fish, 77% of shrimp, 76% of beef, 77% of rice, 76% of cabbage, and 67% of wheat. Animal proteins generally have a higher physiological value than plant proteins.

3) See whether the essential amino acids contained are abundant, whether the types are complete, and whether the proportion is appropriate. Complete types, sufficient quantities, and appropriate proportions are called complete proteins, such as animal protein and legume protein. The variety is complete, the proportion is not appropriate, it is called semi-complete protein, and the content of stove plum is more in cereals.

The types are incomplete, called incomplete proteins, such as glial protein in the skin of meat, and square meters of colloidin square meters. Mix more than two foods to make the amino acids contain each other, which can better suit the needs of the human body. Eating more protein is also not good, it will increase the burden on the kidneys and increase the additional calorie consumption, which is not economical.

Therefore, it is necessary to consume protein reasonably.