洋葱是生活中最普通的蔬菜,生吃、烹炒、做汤都很可口。因为含有多种营养元素,所以它还是一种保健食品。如洋葱富含微量元素硒,有防癌抗衰老的功效;洋葱不含脂肪,含有可降低胆固醇的含硫化合物的混合物,可用于治疗消化不良、食欲不振和积食;洋 Onion is the most common vegetables in life, raw, cooked fried, soup is very tasty. Because it contains a variety of nutrients, it is also a health food. Such as onions rich in trace elements selenium, anti-cancer anti-aging effect; onion is free of fat, contains a mixture of sulfur compounds can reduce cholesterol, can be used to treat indigestion, loss of appetite and food accumulation; foreign