Origin of soybeans

Soybeans can not only be used to extract oil, but also make a lot of soybean products for daily consumption, so where is the origin of soybeans? Let's have a look!

I. basic introduction of soybeans

Soybean is an annual herb of dicotyledonous class, Leguminosae and Soybean genus, with a height of 30-90 cm.

Soybean stems stout, erect, or distally subtwining, distally ±angled, densely brown hirsute. Leaves of soybean usually 3-foliolate; stipules broadly ovate, acuminate, 3-7 mm long, veined, yellow pilose; petiole 2-20 cm long. Soybean flowers, racemes short, few-flowered, long-flowered; total pedicel 10-35 mm or longer, usually 5-8 sessile, tightly squeezed flowers, lower flowers sometimes solitary or paired in leaf axils; bracts lanceolate, 2-3 mm long, strigose. Soybean fruit fat, oblong, slightly curved, drooping, yellowish green, 4-7.5 cm long, 8-15 mm wide, densely covered with brown-yellow long hairs.

II. Origin of soybean

The origin of soybean is China, which in ancient times has been cultivated for about five thousand years. At present, the main producing area of soybean in China is the northeast region.

Most Chinese scholars believe that the country of origin is the Yunnan-Guizhou Plateau. There are also many botanists who believe that it is derived from Ursuli soybeans originating in China.

Cultivated in China since ancient times, it has been planted for 5000 years. It is widely planted in China and is produced in Northeast, North China, Shaanxi, Sichuan and the lower reaches of the Yangtze River. It is more cultivated in the Yangtze River Basin and Southwest, and the quality of soybean in Northeast China is the best.

What are the types of soybeans?

According to the seed coat color and grain shape of soybean, it can be divided into five categories: yellow soybean, green soybean, black soybean, other soybean and feed bean.

1. Yellow soybean

Soybeans are the most widely planted varieties. Yellow soybeans are most commonly used to make a variety of soybean products, brew soy sauce and extract protein. Bean dregs or ground coarse powder are also often used in livestock feed.

2. Green soybean

Soybeans with turquoise seed coat. According to the color of its cotyledons, it can be divided into green skin, green kernel soybean and green skin yellow kernel soybean. It is also one of the main sources of vitamin A, vitamin C and vitamin K, as well as vitamin B.

3. Black soybean

The black seed of the leguminous plant soybean. Also known as green beans, black beans, etc., taste sweet and flat. Black soybeans have the characteristics of high protein and low calories, with black skin and yellow or green inside.

4. Feed beans

Generally, the grain is small, oblong and oval, with sunken dots on the two leaves, and the seed coat is slightly glossy or dull.