1, eggs
Common eggs are chicken, duck, goose and quail eggs. Among them, eggs are the most widely used in food processing industry. All kinds of eggs have similar structures. Mainly composed of eggshell, egg white and egg yolk.
2. Milk
Milk is one of the oldest natural drinks and is called white blood. Milk is rich in protein, fat, vitamins, minerals and other nutrients, and milk protein contains essential amino acids. Milk fat is mostly short-chain and medium-chain fatty acids, which are easily absorbed by the human body; Potassium, phosphorus, calcium and other minerals have a reasonable proportion and are easily absorbed by the human body.
Step 3 fish
Fish is the oldest vertebrate. Some hybrid offspring with different chromosome numbers still have fertility. They inhabit almost all aquatic environments on earth, from freshwater lakes and rivers to saltwater oceans. Fish is rich in animal protein and phosphorus, rich in nutrition and delicious. It is easily digested and absorbed by human body and plays an important role in the development of human physical strength and intelligence. Other parts of fish can be made into cod liver oil, fish glue, fish powder and so on.
Step 4: potatoes
Potato belongs to the genus Panicum in Solanaceae, and its tuber is edible, which is the fourth largest food crop in the world, second only to wheat, rice and corn. Potatoes are also called potato, potato, potato, potato head, sweet potato, potato, potato and so on. Together with wheat, rice, corn and sorghum, it is called the five major crops in the world.
5. Vegetables
A vegetable refers to a plant or fungus that can be cooked into food. Vegetables are one of the essential foods in people's daily diet. Vegetables can provide a variety of vitamins, minerals and other nutrients needed by the human body. According to the statistics of FAO 1990, 90% of vitamin C and 60% of vitamin A necessary for human body come from vegetables. In addition, there are many phytochemicals in vegetables, which are recognized as effective components beneficial to health.
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