The present study reports the development and validation of a high-throughput high-
performance liquid chromatographic (HPLC) assay for the determination of caffeine in food …

A rapid liquid chromatography–mass spectrometry method for the simultaneous
quantification of caffeine, trigonelline, nicotinic acid and sucrose in coffee was developed …

Charles University in Prague Faculty of Pharmacy in Hradec Králové Department of
Analytical Chemistry Candidate: Lýdia Mihalčíková Supervisor: Warunya Boonjob, Ph. D …

Coffee is a product consumed all around the world, Brazil being the biggest exporter.
However, little is known about the difference in composition of the different brands in terms …

" Guaraná"(Paullinia cupana) is used as a physical activity enhancer and stimulator due to
its methylxanthines and condensed tannins. The aim of this work was to evaluate the …

The Brazilian Food Supplement Law recently recognized that guarana (Paullinia cupana)
contains bioactive substances, hence supporting its role as a functional food ingredient. The …

Abstract Guaraná (Paullinia cupana Kunth) is a climbing evergreen plant originated in the
Amazonia forest and belonging to the Sapindaceae family. In particular, the pulverised seed …

Introduction: Coffee is the most important and popular beverage in the world. The main
differences between coffee and other beverages like tea is the variety of applied brewing …

Caffeine is often added as a stimulant to various beverages in order to provide consumers
with extra energy and mental alertness. Today, over 90% of the population regularly uses …