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 Kofeīns
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ID number:701472
 
Author:
Evaluation:
Published: 10.09.2007.
Language: Latvian
Level: Secondary school
Literature: 7 units
References: Not used
Extract

Vēsture.
Pirmo reizi kofeīnu no kafijas pupiņām izdalīja Fridliboms Ferdinands Runge 1820.gadā. 1827.gadā francūzis Odrī atklāja tējas lapās līdz tam laikam nezināmu vielu, kuru nosauca par teīnu. 1837. gadā tika pierādīts, ka teīns un kofeīns ir identiski.

Kas ir kofeīns?
Kofeīns ir narkotiska viela, kas bieži sastopama kafijā, tējā, bezalkoholiskajos dzērienos un mazās devās šokolādē un pat tas tiek pievienots dažādiem medikamentiem.…

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