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All about cafeine http://cofeeandhealth.org/topic-overview/all-about-cafeine-2/ 

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Moderate cafeine consumption, o around !! mg cafeine or the e"uivalent o upto # cups o cofee per da$, can be en%o$ed as part o a health$ balanced diet and

an active liest$le&. Moderate cafeine consumption is associated with a range o

desirable ph$siological efects, including mental and ph$sical perormance.

'ince cofee naturall$ contains cafeine, there is regularl$ some conusion, even in

the research literature, between the efects o cafeine and those o cofee on

health.

(ofee and (afeine

(ofee has a long histor$ o consumption. (ofee was discovered around &,!!!

$ears ago in the region now )nown as *thiopia. +he rst cofee shipment to *urope

was around &. apid growth o popular cofee houses spread rom the mid-&th

centur$ as the$ became avourite meeting places.

 +he cofee tree is a tropical evergreen shrub 0genus (ofea1, and two beans are

generall$ ound in each ripe ruit, which resembles a red cherr$. 'ome #! or socountries in (entral and 'outhern America, Arica and Asia grow cofee on a

commercial basis. +he two most common species grown are varieties o (ofea

canephora 0robusta1 and (ofea arabica 0arabica1.

(ofee is en%o$ed around the world or its taste and aroma but also or its mild

stimulant efects on bod$ and mind. (afeine has been well identied as being the

active compound in cofee responsible or this efect.

(hemistr$ o (afeine

(afeine belongs to the amil$ o heteroc$clic compounds )nown as purines. t has

the s$stematic name 3,-dih$dro-&,3,-trimeth$l-&4-purine-2,-dione5 it is also

)nown as &,3,-trimeth$l6anthine, and &,3,-trimeth$l-2,-dio6opurine.

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8/15/2019 All About Caffeine

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(afeine can be classied as an al)aloid, a term used or substances produced as

end products o nitrogen metabolism in some plants. +he chemical ormula is ( 7 4

&! 8 9 2. (afeine has a molar mass o &.& grams 0.7# ounces1. t is soluble

in water and in man$ organic solvents, and it appears in pure orm as white cr$stals.

(afeine can be prepared b$ e6traction rom natural sources or b$ s$nthesis rom

uric acid.