Onion belongs to liliaceae allium genus, is a 2 - year - old herb. A brown powder obtained from Onions. It has the function of reducing inflammation, sterilization and promoting wound healing. Onion extract contains fatty (oil) preparations that are widely used to care for, prevent or treat damaged skin tissue. Modern medical research also shows that Onions contain trace element selenium. Selenium is an antioxidant. Its special function is to make the body produce large amounts of glutathione. The physiological function of glutathione is to deliver oxygen for cellular respiration. With the increase of selenium in the body, the incidence of cancer will be greatly reduced. Therefore, Onions are another healthy food.
Onions also have a hypoglycemic effect because they contain organic substances similar to the hypoglycemic drug sulfoxide, which produces the strong diuretic effect of picroside in the body. Diabetes patients with a meal of 25~50g onion, can play a better hypoglycemic diuretic effect.