以往会有许多作者发现,当核黄素缺乏时,动物体重增加速度减缓,但食欲不受影响,因而认为核黄素缺乏可以影响食物的利用率。Sure的试验证明在进食量相等时,缺乏核黄素鼠的体重增加速度为不缺乏者的十分之一。Mannering及Elvehjem发现 In the past, many authors have found that when riboflavin is lacking, the weight gain of an animal slows but the appetite is not affected. Therefore, the lack of riboflavin can affect the utilization of food. Sure’s tests show that riboflavin-deficient rats gain about one-tenth the rate of weight loss when fed at equal amounts. Found by Mannering and Elvehjem