"Valley" originally refers to grains with shells; Like rice, millet (millet, that is, millet) and millet (also known as yellow rice), there are shells outside, so they are called valleys. The sound of the word Gu comes from the sound of shells. Grains were originally called grains in ancient China, and later referred to food crops.
There are two main views about grain. Mainstream rice (commonly known as rice, rice), millet (commonly known as yellow rice), millet (Jiì, also known as millet, commonly known as millet), wheat (commonly known as wheat for flour) and glutinous rice (commonly known as soybean). Because the dry climate in some places is not conducive to the cultivation of rice, hemp (commonly known as pockmarked) is used instead of rice as one of the five grains.
Expanding information and the benefits of eating whole grains
Dietary Guidelines for China Residents (20 16) recommends that each person should consume 250~400g of cereals and potatoes every day, including 50 ~ 150g of whole grains and miscellaneous beans and 50 ~ 100g of potatoes. Cereals, rice and pasta account for 50% ~ 60% of food.
The nutrients in whole grains are very rich, among which cellulose and minerals are several times that of ordinary white rice, and vitamin A, vitamin B 1, vitamin B2, vitamin C, vitamin E and trace elements such as calcium, potassium, iron and zinc are more abundant.
Whole grains are the main source of dietary fiber, and most of them contain more unsaturated fatty acids, which can provide most of the nutrients necessary for human body. Therefore, it can be said that whole grains are the most nutritious food group and the cornerstone of diet, which has many benefits to human health.
Baidu Encyclopedia-Gu Wu
People's Network-The Benefits of Eating Whole Grains