... Description Riboflavin, also known as vitamin B2 is an easily absorbed colored micronutrient with a key ... and FMN, and is therefore required by all flavoproteins. As such, vitamin B2 is required for a wide variety ... B2: Being used as nutritional supplement, it is widely used in wheat flour, dairy products and ... , chocolate, catchup and so on. Sometimes it is also used as pigment. As a food additive, ...