洋葱属于葱蒜类蔬菜，含有丰富的维生素Ｃ、碳水化合物、较多的硫、磷、铁及硫化丙烯的挥发物质，具有特殊的辛辣味，受到人们的欢迎。白皮洋葱，由于其品质优良、口感好，维生素含量比普通洋葱丰富，适宜作脱水加工的原料或罐头食品的配料，因此更具有其商业价值。洋葱新... Onions belong to the onion and garlic vegetables, rich in vitamin C, carbohydrates, more sulfur, phosphorus, iron and propylene sulfide volatile substances, has a special spicy flavor, by the people’s welcome. White onions, because of its good quality, good taste, rich in vitamins than ordinary onions, suitable for dehydration processing of raw materials or canned food ingredients, so more of its commercial value. Onion new ...