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维生素最早是从米糠中分离出来的一种晶体,人们只知它对防治鸽子的多发性神经炎有效。后来发现维生素竟与人类的生命活动密切相关,是生命的物质催化剂,离开了维生素,生命也就不可能延续了。维生素的种类繁多,但在天然食物中的含量都很有限,人体每天对维生素的需要量也有限,常以毫克或微克计量。一般情况下,机体容易缺乏的维生素有维生
The earliest form of vitamins isolated from rice bran crystals, people only know that it is effective against pigeons polyneuropathy. Later found that vitamins and human life activities are actually closely related to life is a material catalyst, leaving the vitamins, life will not be able to continue. A wide range of vitamins, but the content of natural foods are very limited, the body’s daily demand for vitamins is also limited, often measured in milligrams or micrograms. Under normal circumstances, the body easily vitamin lack of life