维生素B_2(又名核黄素),是一种水溶性维生素,它参与体内的物质代谢,对维持生命活动、促进生长发育有重要的作用.但是,由于维生素B_2在食物中分布不广,含量又少,而且在烹调加工中又易损失,因此我国人民膳食中的维生素B_2的供给量常感不足,轻度的维生素B_2缺乏症常可见到,这是营养学上值得注意的一个问题. Vitamin B 2 (also known as riboflavin) is a water-soluble vitamin that participates in the metabolism of the body and plays an important role in maintaining life activity and promoting growth and development.But as vitamin B 2 is not widely distributed in food, And less in the cooking process and easy to lose, so our people's diet in the supply of vitamin B 2 often feel inadequate, mild vitamin B 2 deficiency can often be seen, which is nutrition is worth noting a problem.