Riboflavin is a B vitamin. It can be found in certain foods such as milk, meat, eggs, nuts, enriched flour, and green vegetables. Riboflavin is frequently used in combination with other B vitamins in vitamin B complex products.
embodied - possessing or existing in bodily form; what seemed corporal melted as breath into the wind- Shakespeare; an incarnate spirit; `corporate' is an archaic term. incarnate, bodied, corporal, corporate.
The definition of delightful is  someone or something that is charming or that causes happiness and joy. An example of something that would be described as delightful is a charming movie that you really enjoy watching.