What is Riboflavin Functions of Riboflavin Sources of Riboflavin Deficiency of Riboflavin Diseases of Riboflavin Treatment

1. 1
:: B2 [ RIBOFLAVIN ]::

2. :: B2 [RIBOFLAVIN] ::
• It is flavone, a highly yellow coloured
substance.
• It is water soluble vitamin. Body can’t store it.
• Not synthesized in humans
• It was first isolated from milk, so it is also
called lactoflavin.

3. FUNCTIONS : (RIBOFLAVIN) :
1. Essential for body growth. Vital role in
intracellular respiration : anti oxident.
2. Helps for carbohydrate, Protein, fat
metabolism.
3. Helps in health of the mouth, skin, eyes and
mucosa of intestine.
4. Helps retina to transfer light stumuli in to
nerve stimuli.
5. Responsible for the yellow color of urine :
occurs when taking vitamin tablets.

4. • Common food sources of B2 are :
1. Green leafy vegetables especially
spinach, legumes, tomatoes, almonds,
Whole grains, peas, beet,
2. Dairy products, Milk, cheese,
3. Meat, Liver, eggs, mushrooms, yeast
4
SOURCES ( RIBOFLAVIN) :

5. • This vitamin is lost on heating food.
Milling of cereals also leads to loss by
60%.
• Riboflavin food stored in dark or opaque
containers.
5
:: B2 AND HEAT ::

6. RDA OF RIBOFLAVIN :
• 0.5 – 1.5 mg / day
ARIA report 2008, 2016
• RDA (Recommanded daily allowance ) OF B2 :
Overdosage of Vitamin B2 :
• No toxicity is known of B2.
• 1.5 mg / day ( Pregnancy)
• 1.6 mg / day (Breast feeding)

7. :: Deficiency of Riboflavin ::
• B2 Deficiency common in Africa, Asia
• Following increase risk of riboflavin deficiency
1. Poor dietary intake : Starvation, fasting,
Anorexia nervosa
2. Decreased Absorption : Malabsorption, Celiac
disease
3. Increased losses : Chronic diarrhoea,
Hemodialysis and peritoneal dialysis
4. Increased utilization : Pregnancy, Breast
feeding, liver disorders

8. 8
8
SYMPTOMS : DEFICIENCY ::
Cheilosis, angular stomatitis, (swelling,
fisssure on the lips), glossitis (magenta
tongue).
1
Angular Stomatitis Glossitis

9. 9
SYMPTOMS : DEFICIENCY ::
Dry Skin, hair fall
(seborrheic
dermatitis) and
growth is retarded.
2
seborrheic dermatitis
All these deficiencies
are named as
Ariboflavinosis.
Eyes may develop
light sensitivity
(Photophobia),
opacities (cataract)
and corneal ulcers.
3

10. 10
10
10
10
• Riboflavin or
multivitamin
supplements
• Sometimes riboflavin
given by injection
10
:: Treatment ::