Chapter 19, Problem 19.88GP

Interpretation Introduction

Interpretation:

The amount of apple juice would an adult have to consume to obtain the RDA if one glass of apple juice contain $\text{0}\text{.014}\text{mg}$ of riboflavin.

Concept Introduction:

Vitamin: It is an organic molecule which is essential in trace amounts and it cannot be synthesized in the body. It must be obtained from the diet.

According to the solubility, vitamins can be classified into two:

• Water soluble vitamin
• Fat soluble vitamin

Water soluble vitamin:

• Found in the aqueous environment inside the cells.
• They have $-\text{OH},-\text{COOH}$ or other polar groups which make them water soluble.
• Some water soluble vitamins are incorporated into coenzymes.

Enzyme cofactors:

Some enzyme requires cofactors for optimum activity. Cofactors can be small metallic ions or large molecules called coenzymes.

Riboflavin is a coenzyme belonging to the Vitamin B family and is a precursor of the coenzymes Flavin mononucleotide (FMN) and Flavin adenine dinucleotide (FAD).