1. Beans are rich in protein and a small amount of carotene, vitamin B and vitamin C, so they are vegetables with high nutritional value. Protein content in dry matter of beans is about 2.7%, which is a good source of plant protein.

2. The carbohydrates contained in beans can play a role similar to food, and people often eat beans as the main course. In addition to strengthening the spleen and stomach, the most important thing is to tonify the kidney.

3. Li Shizhen once praised him for "regulating middle energizer, benefiting kidney and stomach, harmonizing five internal organs, regulating camp and health, and producing sperm". The so-called "camp and life" is what Chinese medicine calls camp and life. If it is adjusted, people's sleep quality can be fully guaranteed.

4, eating more beans can also treat vomiting, snoring and other discomfort; When the child has indigestion and flatulence, it can play a certain role in relieving it by using a proper amount of raw beans and swallowing them after chewing. Fiber in beans is beneficial to reducing cholesterol in human body and is suitable for people with hyperlipidemia. It can also strengthen gastrointestinal peristalsis and help prevent constipation.

Extended data:

Botanical history

Regarding the origin of cowpea, Purseglove (1968) thinks it may be tropical Africa, because wild species can be found there. He also believes that cowpea was spread to Asia and the Mediterranean region through Arab countries such as Egypt in the early days, and now it is produced in tropical areas, while the main producing areas are tropical Africa and tropical Asia, and the species of China only account for about 65,438+0/65,438+00 of the genus.

However, according to the literature, Guang Yun has the word "embarrassing". The original work was written at 60 1, but it has been rebuilt. There is a rebuilt version of Lv Pengnian and others in the Song Dynasty.

There is a record of cowpea in the illustrated materia medica in the northern song dynasty; Su Shi wrote poems about cowpeas. In the Ming Dynasty, cowpea was recorded in various books and records, such as "Herbal Medicine for Famine Relief" written by Zhu Kui. It can be seen that cowpea has been widely planted in the Ming Dynasty. In historical records, the climate of the Yellow River Basin is warmer. According to ancient records, China may also be one of the cradles of cowpea.

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