Caffeine content in coffee beverages on the campus of the Czech University of Life Sciences Prague

Eliška Jurošková

Bakalářská práce

Abstract:

Coffee beverages have a long history and it is known all over the world. The most abundant substance in coffee is caffeine. Caffeine has psychosomatic effects on the human body that can be both positive and negative. In the research of this thesis, caffeine has an important role. The literary part of this bachelor thesis focuses on the history of the coffee plant, the botanical description, and the methods of harvesting coffee beans. It also describes the biggest producer of coffee in the world and different ways of roasting coffee beans. Further, it focuses on the aforementioned caffeine and its effect on the human body and how it affects students. In the practical part, research was conducted to compare the caffeine content of coffee drinks from seven different locations on the campus of the Czech University of Life Sciences Prague. The sample collection was carried out in three replications six months apart. To evaluate the samples was used method of high-performance liquid chromatography. Sample volume values range from 25 ml to 120 ml. The highest measured value of caffeine in a single dose is 165.94 mg and comes from Club C and the lowest is 58.20 mg from AULA Café. A large number of students or professors drink coffee or another caffeinated beverage on campus every day. And that is why it is very important to control and monitor caffeine intake to ensure that they do not exceed the recommended daily dose.

Keywords

Coffee, Caffeine, Coffea arabica, Coffea canephora, HPLC-DAD

Jazyk práce: angličtina

Datum vytvoření / odevzdání či podání práce: 16. 4. 2023

Obhajoba závěrečné práce

• Obhajoba proběhla 25. 5. 2023
• Vedoucí: Ing. Olga Leuner, Ph.D.
• Oponent: Barbora Fišerová, Ing.

Česká zemědělská univerzita v Praze

Fakulta tropického zemědělství

Bakalářský studijní program:
Tropické zemědělství