Secondly, compared with ordinary red peanuts, the main component of black peanut coat pigment is anthocyanin pigment, which has antioxidant, antimutagenic, antitumor and low-density lipoprotein effects.
3. Compared with common peanut, the crude protein content of black peanut is higher, which is 5%, arginine content is 23.9%, potassium content is 19%, zinc content is 48%, and selenium content is 1.0 1%.
Compared with ordinary peanuts, black peanuts have no difference in size and shape, but the kernel skin is black and the kernel is gray-black. Has the effects of enhancing human immunity and delaying aging.
Extended data
The black peanut plant is semi-erect, with a plant height of about 40cm and a lateral branch length of 50cm. Its leaves are dark green and black, and it grows steadily. Generally, it will not grow in vain, and the growth period is 125 days. It belongs to a medium-mature variety. There are many continuous flowers, high seed setting rate, and the number of flowers per plant 150 ~ 180. The fruit is medium in shape and the shell is hard and not easy to break. There are 50 ~ 60 fruits per pier, the Shuang Ren rate is over 90%, the weight of 100 fruits is about 250g, the weight of 100 grains is 180g, and the rice yield is 70%. The seed kernel is oval, and the seed coat is purple-red when fresh and purple-black when dry; Strong drought and disease resistance, good resistance to leaf spot, suitable for planting in medium fertility land.
Peanut, formerly known as groundnut (scientific name: peanut. ), a kind of nut with abundant output and extensive consumption in China, is also called "longevity fruit" and "cajanus cajan". It belongs to the genus Panicum in Rosaceae and Leguminosae, with erect or creeping stems, 30-80 cm long, wings separated from keel, pod length of 2-5 cm, width of 1- 1.3 cm, swelling, thick pods, and flowering in June-August. Mainly distributed in Brazil, China, Egypt and other places. It can be used as raw material for cosmetics such as soap and hair tonic.
Reference source: Baidu Encyclopedia-Peanut Baidu Encyclopedia-Black Peanut