(Five Black Grains) refers to black sesame seeds, black peanuts, black beans, black rice and black millet. The details are as follows:

1. Black Sesame:

Black Sesame is a plant of the genus Flaxseed in the family Flaxseed. The black seeds of sesame, also known as flax, oil hemp, giant victory and fat hemp, are distributed in Anhui, Hubei, Guizhou, Yunnan, Guangxi, Sichuan and other places. The black color of black sesame comes from a flavonoid.

Black sesame contains a lot of fat and protein, and also contains nutrients such as sugar, vitamin A, vitamin E, lecithin, calcium, iron and chromium.

2. Black peanut:

Black peanut is a kind of colored peanut. Black peanut, also known as selenium-enriched black peanut, black peanut.

Black peanut is a new variety which contains calcium, potassium, copper, zinc, iron, selenium and manganese, 8 vitamins and 19 amino acids needed by human body, and is also rich in trace elements such as selenium, iron and zinc and melanin. Compared with safflower, the content of crude protein, arginine, potassium and zinc in black peanut are 5%, 23.9%, 19% and 48% higher.

3. Black bean:

Black bean is the black seed of soybean in Leguminosae. The protein content of black beans is 36%, which is easy to digest, and it is of great significance to meet the needs of human body for protein.

4. Black rice:

Black rice is a kind of rice used for both medicine and food, belonging to glutinous rice. Black rice is a characteristic variety formed by long-term cultivation of Gramineae rice. There are two kinds of grain types: indica and japonica, and the grain quality is divided into waxy and non-waxy. Brown rice is black or dark brown. Black rice is dark and nutritious, and has the reputation of "black pearl" and "king of rice in the world". It is produced in many places in China, and the representative ones are northeast black rice, Shaanxi black rice, Guizhou black glutinous rice and Hunan black rice.

Black rice is black or dark brown, with rich nutrition and high edible and medicinal value. Besides porridge, it can also be used to make various nutritious foods and wine, and it is known as the "black pearl" and the "king of rice in the world". The most representative black rice in Yangxian County, Shaanxi Province has been known as "medicinal rice", "Gong Mi" and "longevity rice" since ancient times.

5. Black millet:

Black millet is a kind of food base material with high nutritional value, which is especially suitable for pregnant women, infants and people who are sick and weak. Therefore, it is also known as the "king of nutrition in the valley". Mainly produced in Shanxi, northern Shaanxi, Inner Mongolia and Hexi region of Gansu.