The protein content of egg yolk is slightly higher than that of protein, but an egg yolk can contain as much as 300 mg of cholesterol. Even people without heart disease should not eat more egg yolk. protein's cholesterol content is 0; Egg yolk contains a lot of oil. Usually, we don't see oil in the egg yolk, but when you bake the egg yolk in the microwave oven, you will find that a lot of oil can flow out. You can also see the oil in the salted egg yolk. The calorie of egg yolk is six times that of protein, so egg yolk is also a high-calorie food, and it is a food that people who need to lose weight need to go on a diet.

Protein content table of common foods

Food name 100g food contains protein.

Oats 15.6

Lotus seed 16.6

Soybean 36.3

Broad bean 28.2

Pork (lean) 16.7

Pig heart 19. 1

Pig liver 2 1.3

Bean curd skin 50.5

Pig kidney 15.5

Pigskin 26.4

Peanut 26.2

Pig blood 18.9

Walnut 15.4

Beef (lean meat) 20.3

Mutton (thin) 17.3

Silver carp 17.0

Rabbit meat 2l 2

Chicken 2 1.5

Chicken liver 18.2

Duck 16.5

Sea cucumber (dried) 76.5

Eggs 14.7

Lobster 16.4

Protein is the main component of human body structure, and its content is second only to water, accounting for about one fifth of human body weight. Protein is the most abundant component in muscle and nerve tissue, followed by other organs and gland tissues, but its content is also quite rich. The content of protein in beans, peanuts, meat, milk, eggs, fish and shrimp is higher, while the content of cereals is less, even less in vegetables and fruits. The human demand for protein depends not only on the content of protein, but also on the types and proportions of essential amino acids contained in protein. Because the types and proportions of amino acids contained in animal protein are more in line with human needs, the nutritional value of animal protein is higher than that of plant protein. In plant foods, protein in rice and flour lacks lysine, and protein in beans lacks methionine and cystine. Therefore, eating mixed food can learn from each other's strong points and greatly improve the utilization rate of mixed protein. If animal protein is supplemented in a proper amount, the nutritional value of protein in the diet can be greatly improved. The content of common protein (per kloc-0/00g food) is as follows: 7 grams of rice, 9 grams of flour, 36 grams of soybeans, 24 grams of mung beans, 7.4 grams of tofu, 2 grams of Chinese cabbage, 2.3 grams of eggplant, 0.4 grams of apple, 27 grams of peanuts, 9.5 grams of pork, 20 grams of beef, 65438+ 0.5 grams of human milk and milk. Although the content of protein in human milk, milk and eggs is low, the content of essential amino acids is basically the same as that in human body, so it has high nutritional value and is the best food in diet.