Onion, alias, onion, onion, onion, onion, Dutch onion, skin teeth, etc., Liliaceae, onion is a biennial herb. Onion contains prostaglandin A, can reduce peripheral vascular resistance, reduce blood viscosity, can be used to lower blood pressure, refreshing, relieve stress, prevent colds. In addition, the onions can also remove oxygen free radicals in the body, enhance the metabolic capacity, anti-aging, prevention of osteoporosis, is suitable for middle-aged health food.
Onions are widely distributed in China, cultivated in the north and south, is one of China's main vegetables. China's origin of the land are Fujian, Shandong, Gansu, Inner Mongolia, Xinjiang and other places.