突尼斯是生产柑桔类水果的主要国家之一，故有寻求消费新鲜产品之权利。特别是新鲜产品含丰富的维生素C。──维生素的需要理学家最近的研究成果探讨了一般维生素在人体内所起的作用。他们指出脂溶性维生素进入了细胞膜结构中，并可参与合成激素。维生素需求量是根据其日需食物 Tunisia is one of the major countries producing citrus fruits and has the right to seek fresh products for consumption. Especially fresh products are rich in vitamin C. ─ ─ The Needs of Vitamin Neutrinos recent research findings have explored the role that common vitamins play in the body. They point out that fat-soluble vitamins enter the cell membrane structure and are involved in the synthesis of hormones. Vitamin demand is based on their daily needs of food