Introduction: The health benefits and detrimental effects of coffee consumption may be linked to chemical compounds contained in coffee beans. The aim of our study was to evaluate the concentration of sodium (Na), potassium (K), calcium (Ca), magnesium (Mg), iron (Fe), copper (Cu), zinc (Zn), aluminum (Al), nickel (Ni), lead (Pb) and cadmium (Cd) in green and roasted samples of coffee beans purchased in Bosnia and Herzegovina, and to determine the potential health implications at current consumption level.
Methods: The concentrations were determined using a microwave high-pressure mineralization and atomic absorption spectrometer that measures total metal (ionic and non-ionic) content.
Results: The average metal concentrations (μg element/g coffee) in the green coffee beans were; Na: 18.6, K: 19898, Ca: 789, Mg: 1758, Fe: 60, Cu: 14, Zn: 3.6, Al: 4.2, Ni: 0.415, Pb: 0.076, and Cd: 0.015, while, in the roasted; Na: 23, K: 23817, Ca: 869, Mg: 1992, Fe: 41.1, Cu: 11.4, Zn: 5.41, Al: 4.19, Ni: 0.88, Pb: 0.0169, and Cd: 0.0140.
Conclusion: The level of investigated metals at the present level of consumption of coffee in Bosnia falls within the limits recommended as safe for health.
Uvod: Zdravstvene prednosti in škodljivi učinki uživanja kave so lahko povezani z kemijskimi spojinami v kavnih zrnih. Cilj študije je oceniti koncentracije naslednjih spojin: natrij (Na), kalij (K), kalcij (Ca), magnezij (Mg), železo (Fe), baker (Cu), cink (Zn), aluminij (Al), nikelj (Ni), svinec (Pb) in kadmij (Cd) v zelenih in praženih vzorcih kavnih zrn, kupljenih v Bosni in Hercegovini, ter določiti morebitne zdravstvene posledice glede na trenutno raven uživanja.
Metode: Koncentracije so bile določene z uporabo visokotlačne mineralizacije z mikrovalovi in atomske absorpcijske spektrometrije, ki merijo skupno vsebino kovine (ionska in neionska).
Rezultati: Povprečna koncentracija kovin (μg elementa/g kave) v zelenih kavnih zrnih je bila: Na: 18,6, K: 19898, Ca: 789, Mg: 1758, Fe: 60, Cu: 14, Zn: 3,6, Al: 4,2, Ni: 0,415, Pb: 0,076 in Cd: 0,015; v praženih zrnih pa: Na: 23, K: 23817, Ca: 869, Mg: 1992, Fe: 41,1, Cu: 11,4, Zn: 5,41, Al: 4,19, Ni: 0,88, Pb: 0,0169 in Cd: 0,0140.
Zaključek: Raven preverjenih kovin na trenutni stopnji uživanja kave v Bosni in Hercegovini se nahaja znotraj omejitev, ki so priporočene kot zdrave za zdravje.
Keywords: coffee infusion; green coffee; metal concentrations; roasted coffee.
© 2019 Grażyna Adler, Arkadiusz Nędzarek, Agnieszka Tórz, published by Sciendo.