洋葱是一种价廉物美的蔬菜,它不仅含有蛋白质、糖类、维生素A、B、C,胡萝卜素、硫氨素、尼克酸和钙、磷、铁、硒等营养素,而且含有对人体很多疾病有治疗和预防作用的化学物质。所以,洋葱既是一种营养丰富的蔬菜,又是一种防病治病的良药。 1、洋葱中含有大量的植物杀菌剂,具有很强的杀菌能力,对金黄色葡萄球菌、链球菌、白喉杆菌、痢疾杆菌、结核杆菌、大肠 Onion is a cheap vegetable which contains not only protein, sugar, vitamin A, B, C, carotene, thiamin, nicotinic acid and calcium, phosphorus, iron, selenium and other nutrients, Diseases have a therapeutic and preventive role of chemicals. Therefore, onion is both a nutrient-rich vegetables, but also a good medicine for disease prevention and treatment. 1, onion contains a large number of plant fungicides, has a strong bactericidal ability against Staphylococcus aureus, Streptococcus, diphtheria bacilli, Shigella, Mycobacterium tuberculosis, large intestine