Lecture #16 - Riboflavin (B2)

Question 1

What forms does Riboflavin take in biological systems?

Answer 1

Riboflavin is usually phosphorylated to form

flavin mononucleotide (FMN)

and

flavin adenine dinucleotide (FAD).

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Question 2

How is Riboflavin affected by environmental conditions?

Answer 2

Riboflavin is stable to heat but very sensitive to light destruction.

Question 3

What is the structure of Riboflavin (B2)

Answer 3

Head has 3 rings
Tail is a hydrocarbon structure called ribitol

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Question 4

Where is Riboflavin most commonly found?

Answer 4

It’s widely distributed in foods, especially those of animal origin, and found mostly bound to proteins.

Question 5

What are the primary functions of Riboflavin?

Answer 5

Riboflavin is required as a coenzyme for carbohydrate and fat metabolism.

Question 6

where are the the highest concentrations of riboflavin are found

Answer 6

Liver, kidneys, and heart