洋葱具有杀菌消毒作用。冬天皮肤生冻疮可将洋葱切开,轻擦冻疮患处,每日数次,很快痊愈。洋葱中含有环蒜氨酸和硫氨基酸等,是降血脂、舒张脑血管的有效成份。常吃洋葱能补脑,还能起到降压作用。大蒜有效成份和洋葱基本相同,而在降血脂 Onions have a sterilizing effect. Winter skin frostbite can cut the onion, light frostbite affected area several times a day, soon healed. Onion contains cycloalanine and sulfur amino acids, which is an effective ingredient for lowering blood pressure and relaxing cerebral blood vessels. Eat onions can make up the brain, but also play a role in blood pressure. The effective ingredient of garlic is basically the same as that of onion, but in reducing blood lipids