2. S U B M I T T E D T O : M A M F A R E E H A
S U B M I T T E D B Y : S A M R A M A R R I U M
1 3 1 3 1 5 0 6 - 0 1 2
B O T A N Y 7 T H
Theine and Caffeine

3. Caffeine
 An alkaloid compound which is found in coffee plants
and is a stimulant of the central nervous system.
 Caffeine is a stimulant of central Nervous system
(CNS) lying in methylxanthine class.It is the world's
most widely consumed psychoactive drug.

4. 1.Occurance.
 Caffiene is present in :
I. Coffee beans
II. Tea leaves
III. Kola nuts
IV. Chocolates
V. Energy drinks
VI. Guarana berries

5. 2.Chemical nature of caffiene.
 Caffiene is a drug chemically 1,3,7-
trimethylxanthine.
 It is an odourless, white crystaline powder that has
ability to stimulate the central nervous system
 Caffiene has similar structure to adenosine , which is
naturally occuring neurotransmitter in brain , so it
occupies the adenosene receptor and inhibits brain
cell functions so alertness restores.

6. Cont.
 It is a purine alkaloid.
•Molecular
formula
C8H10N4O2

7. Structural formula

8. Mechanism of action

9. Caffien and adenosine similarity

10. Cont.

11. 3.Physiological Effects .
1. Positive effects.
 Helps to prevent Alzheimers
 Increase memory
 Detoxes the liver and cleanses the colon
 Stimulate hair growth
 Relieves the post work out muscle pain
 Prevent from depression

12. Cont.
Protects against cataract.
Prevent from skin cancer

13. 2. Negative Effects
2.Negative effects
Effects on heart rate and and blood pressure
Osteoporosis
Diabetes
Loss of sleep ,insomnia
Fertility and miscarriage
Harmonal effects

14. Theine.
 Caffiene and theine are
same substances
 Caffiene was first
discovered in coffee beans
so named as caffiene , the
same substance is also
found in tea leaves called
theine.
 Hence tea caffiene is called
theine.
 Same way guranine is
guarana caffiene .

15. 1.occurance
 It is present in tea leaves.
2.chemical formula
 Chemical formula is same to caffiene
•Molecular
formula
C8H10N4O2

16. Difference between caffiene and theine
 coffee and tea contain caffeine but the doses are
quite different, as are the effects on the body, and
coffee contains almost double the amount or caffeine
per regular cup, compared with tea.
 The caffeine content in coffee is a central nervous
system stimulant and has immediate effects. It
excites us, accelerates our heart rate and raises blood
pressure.

17. Cont.
The effects of theine in tea on the Central nervous
system and cardiovascular system are mellower on
the system as a whole. Instead of a quick fix with
coffee, tea is the healthier and longer lasting fix.
Research shows tea sharpens the mind, increases
concentration, and enhances relaxation
 Coffee is bitter and extremely acidic. ‘Theine’,
present in Tea, is much less acidic and gentler on the
digestive system.

18. 3. Physiological effects.
1.Positive effects.
The antioxidants in green tea have been linked to
lowering the risk of certain cancers (breast, ovarian,
pancreatic) , heart disease, stress relief, and fat
reduction & weight loss
Regular black tea drinkers have also shown to have a
lower risk of developing heart disease
ea is also high in antioxidants, which have protective
abilities towards free radical

19. Cont.
 Green tea also shows beneficial effects assisting to
lower blood cholesterol, control high blood pressure,
lower blood sugar, suppress ageing, prevent and
treat skin disease, stop cavities, and fight viruses.
 Research also indicates that tea is good for your
heart since it decreases serum cholesterol,
triglycerides and fatty acids.

20. Negative effects.
 Side effects of drinking too much black tea include
difficulty sleeping, headaches, nervousness, diarrhea,
irritability, irregular heart rate, confusion,
heartburn, tremors in your extremities and possibly
convulsions.