vitamin B7

2. Vitamin B7-Biotin
• Water soluble
• A sulphur containing B-complex vitamin
• Strengthen immunity

3. History
Work Scientists Years
Called anti egg,
white injury factor
M.A. Boas 1927
Named it biotin Fritz kogal 1935
Eluciated the
structure of bioyin
Du vineaud his
associates
1942

4. Properties
• Biotin crystallizes as long needles
• Biotin freely soluble in hot water
• It has melting point of 2300 c

5. Structure

6. Rich dietary Sources
Barley 60 mcg
Soya beans 60 mcg
Cauliflower 15 mcg
Peanuts 35 mcg
Beef liver 100 mcg

7. Deficiency symptoms
• Muscular weakness
• Lassitude
• Lack of appetite
• Skin disorders
• Heart abnormalities
• Lung infections
• Anaemia
• Extreme fatigue
• Confusion
• Mental depression
• Drowsiness

8. Functions of Biotin
(Metabolic and biochemical function)
• Biotin is vital for healthy immune system
• It is involved in the metabolism
• It is essential for the growth and health of hair
• It controls proper distribution of colour pigment
• It helps to maintain nervous system in a sound
condition

9. Healing and therapeutic properties
• Treatment with 20 mcg of biotin taken daily
for 10 days intramuscularly can heal skin
lesions

10. RDA
• A daily intake of about 100-300 mg is
recommended for adults

11. Precautions
• Heavy dose of vitamin B7 should not be taken
unless the individual has found to have a
deficiency