A simple and fast method of the analysis of green coffee infusions was developed to measure total concentrations
of Ca, Cu, Fe, Mg and Mn by high resolution-continuum source flame atomic absorption spectrometry.
The precision of the method was within 1–8%, while the accuracy was within 1% to 2%. The
method was used to the analysis of infusions of twelve green coffees of different geographical origin. It
was found that Ca and Mg were leached the easiest, i.e., on average 75% and 70%, respectively. As compared
to the mug coffee preparation, the rate of the extraction of elements was increased when infusions
were prepared using dripper or Turkish coffee preparation methods. Additionally, it was established that
the antioxidant activity of green coffee infusions prepared using the mug coffee preparation was high,
75% on average, and positively correlated with the total content of phenolic compounds and the concentration
of Ca in the brew.