Peanuts are often mistakenly called nuts, but this is an annual herbaceous heat and moisture-loving plant of the legume family. From other relatives (beans, peas, soybeans, etc.), peanuts are distinguished by the device of the flower and the peculiarity of the formation of fruits — they, resembling a silk cocoon, ripen under the ground. That’s why peanuts are also called peanuts. Other names — earthen acorn, earth almonds, earth pistachio — also reflect this feature. The native land of peanuts is considered to be Brazil — that is where most of its species grow.
The fruits of peanuts were found in ancient burials in Peru. The ways of spreading peanuts are unclear, but in the 16th century it was imported from South America to Asia and came to Europe from China.
In peanuts are 12 essential and 8 interchangeable amino acids. Most indispensable in 100 g of product reaches the almost daily needs of the human body. For example, tryptophan in 100 g of ground nut is 0.28 g. This is 70% of the daily norm for an adult person. 57% histidine (0.63 g), 53% leucine (1.76 g), and the list can be continued.