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

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B O T A N Y 7 T H

Theine and Caffeine

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.

1.Occurance.

Caffiene is present in :

I. Coffee beans

II. Tea leaves

III. Kola nuts

IV. Chocolates

V. Energy drinks

VI. Guarana berries

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.

Cont.

It is a purine alkaloid.

•Molecular

formulaC8H10N4O2

Structural formula

Mechanism of action

Caffien and adenosine similarity

Cont.

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

Cont.

Protects against cataract.

Prevent from skin cancer

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

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 .

1.occurance

It is present in tea leaves.

2.chemical formula

Chemical formula is same to caffiene

•Molecular

formulaC8H10N4O2

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.

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.

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

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.

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.