Vegetables containing more oxalic acid, such as spinach, bamboo shoots, water bamboo, etc., should be blanched with boiling water first to remove most of the oxalic acid contained in vegetables, even if they want to be cold. Oxalic acid will combine with calcium in the intestine to form calcium oxalate, which interferes with the absorption of calcium by human body and leads to calcium deficiency. Raw vegetables should be eaten from the perspective of safety, and there should be strict requirements in the selection and treatment of ingredients to avoid eating bad stomach or eating bacterial food.

Extended data:

Vegetables that cannot be eaten raw

1, beans

Most beans are not suitable for raw food, such as kidney beans and lentils, because they contain a lot of saponins and erythrocyte agglutinin, which will stimulate the stomach and cause poisoning. In the program "Life of Desire", Huang Lei and Song Dandan stayed up all night because they ate uncooked beans, causing abdominal pain, vomiting and other symptoms.

2. Green leafy vegetables growing on the ground

In the process of planting vegetables, it is necessary to dump human and animal manure and spray pesticides, while green leafy vegetables growing on the ground will be exposed to more pesticides than roots and melons, and it is difficult to completely remove pesticide residues by washing with water, so it is recommended to cook them before eating.

3. Fresh yellow flowers

Fresh day lily contains colchicine, which is nontoxic in itself, but it will be oxidized after being absorbed by the stomach and intestines to form toxic colchicine. Colchicine can irritate the stomach and cause dry throat, abdominal pain, diarrhea and other symptoms.

People's Network-Spinach and lentils must not be eaten raw.