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ID number:431043
 
Author:
Evaluation:
Published: 23.11.2007.
Language: Latvian
Level: College/University
Literature: 4 units
References: Used
Extract

Kofeīns jeb 1,3, 7, trimetilksantīna pieder pie alkaloīdiem, precīzāk metilksantīnu grupas. Kofeīns ir sastopams vairāk nekā sešdesmit augu sugās, no kurām populārākās ir kakao pupiņas, tēja un kafija (Barone 1996). Augos kofeīns kalpo par dabisku pesticīdu, kas nogalina atsevišķus insektus. Šāds kofeīna efekts skaidrojams ar fosfodiesterāzes aktivitātes inhibīciju, kā rezultātā palielinās intracelulārais cikliskā adenozīna monofosfāts. …

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