Ⅰ序言古代人们早就知道航海者和居住在不易吃到新鲜水果与蔬菜的居民容易患坏血病,可用水果和蔬菜治疗,但原因不明。直至1907年霍尔斯脱(Holst)和弗留立许(Frolich),用动物试验证明坏血病是因为食物中缺乏某种维生素所引起,而新鲜之水果及蔬菜含有此种特殊之维生素,后来科学家们即研究此项维生素之提取、构适、性 I. INTRODUCTION It has long been known in ancient times that voyagers and residents living in areas that are not easy to eat fresh fruits and vegetables are prone to scurvy and can be treated with fruits and vegetables but for unknown reasons. Until Holst and Frolich in 1907, animal tests showed that scurvy was caused by the absence of certain vitamins in the food, whereas fresh fruits and vegetables contained this particular vitamin, Later scientists studied the extraction of this vitamin, structure and sexuality