Kofein-prirodni izvori, metabolizam i zdravstveni učinci

undergraduate thesis

• Title (english): Caffeine-natural sources, metabolism and health effects
• Author: Ana Majić
• Mentor: Draženka Komes (mentor)
• Granter: University of Zagreb; Faculty of Food Technology and Biotechnology; (Department of Process Engineering); (Laboratory for Measurement, Regulation and Automatisation); Zagreb
• Defense date and country: 2021-07-16, Croatia
• Scientific / art field, discipline and subdiscipline: BIOTECHNICAL SCIENCES; Nutrition

Abstract

Najvažniji izvori kofeina u svakodnevnom životu su kava i čaj, Mate čaj i guarana, dok je najmanji udio kofeina prisutan u kakaovom zrnu. Kofein je metilksantinski spoj koji je 1820. godine iz kave izolirao Friedrich Ferdinand Runge, dok je ksantinsku strukturu opisao Hermann Emil Fischer 1895. godine. Udio kofeina u guarani iznosi 4-7 %, u lišću čaja 3,5 %, u zrnu kave 1,1-2,2 %, u lišću Mate čaja 0,9-1,7 % i u kakovom zrnu oko 0,03 %. Istraživanja potvrđuju pozitivan utjecaj kofeina na krvožilni i živčani sustav, njegovo ergogeno djelovanje prilikom sportske izvedbe, te smanjenje prevalencije dijabetesa tipa 2, metaboličkog sindroma, Alzheimerove i Parkinsonove bolesti i razvitka karcinoma jetre.

Abstract (english)

The most important sources of caffeine in everyday life are coffee and tea, Mate tea and guarana, while the smallest proportion of caffeine is present in cocoa beans. Caffeine is a methylxanthine compound isolated from coffee by Friedrich Ferdinand Runge in 1820, while the xanthine structure was described by Hermann Emil Fischer in 1895. The content of caffeine in guarana is 4-7%, in tea leaves 3.5%, in coffee beans 1.1-2.2%, in Mate tea leaves 0.9-1.7% and in what beans about 0.03%. Research confirms the positive effect of caffeine on the cardiovascular and nervous systems, its ergogenic action during sports performance, reducing the prevalence of type 2 diabetes, metabolic syndrome, Alzheimer's and Parkinson's disease and the development of liver cancer.

• Keywords: bolesti; čaj; kava; kofein; metabolizam
• Keywords (english): caffeine; coffee; diseases; metabolism; tea
• Language: croatian
• URN:NBN: urn:nbn:hr:159:359117
• Study programme: Title: Nutrition; Study programme type: university; Study level: undergraduate; Academic / professional title: sveučilišni/a prvostupnik/prvostupnica (baccalaureus/baccalaurea) nutricionizma (sveučilišni/a prvostupnik/prvostupnica (baccalaureus/baccalaurea) nutricionizma)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Open access
• Created on: 2021-07-19 09:10:13