1, cereal. Rice, wheat, corn, millet, sorghum, naked oats, buckwheat, etc. It is rich in carbohydrates, protein, B vitamins and minerals (calcium, phosphorus, potassium, sodium and magnesium).

2. beans. Soybean, mung bean, adzuki bean, kidney bean, broad bean, etc. Rich in protein and fat, adzuki beans are rich in carbohydrates, and vitamins mainly include carotene, vitamin B 1, vitamin B2, nicotinic acid, vitamin E and so on. The minerals are mainly potassium, sodium, calcium, magnesium, iron, zinc and selenium.

3. The content of lysine in grain protein is usually low, while the content of lysine in beans is high. The methionine content in bean protein is low, while the methionine content in cereal protein is relatively high. Mixed consumption can play a complementary role, thus improving the utilization rate of protein.

4. Nicotinic acid (although high, but combined, not easy to absorb) in corn is lacking, so it can be mixed with beans rich in nicotinic acid to supplement nutrition.