title: Elemental composition of green coffee and its contribution to dietary intake.
abstract: The concentration of twenty-seven elements (Li, Be, B, Mg, Al, P, K, Ca, Cr, Mn, Co, Ni, Cu, Zn, As, Se, Sr, Mo, Cd, Sn, Sb, Ba, Hg, Pb, Bi, Th, and U) in green coffee samples and their infusions were determined by using inductively coupled plasma-mass spectrometry (ICP-MS). Prior to analysis, green coffee samples were prepared by microwave digestion, while infusions were analyzed without any pre-treatment. The accuracy and precision of the proposed methods were verified by recovery experiments. Considering samples; K, Cu, and Al had the highest mean concentrations with 6714.5μgg(-1), 12.1μgg(-1), and 25.9μgg(-1) among major, trace and toxic elements, respectively. The impact of brewing type on leachability of elements was also studied and the results outlined that mean leachability of elements to Turkish coffee were greater than to mud coffee. Furthermore, dietary element intakes through green coffee consumption were also estimated. This is the first study presenting wide range of elements in green coffee brews and calculating dietary intakes.
authors.affiliation: İstanbul University, Institute of Forensic Sciences, Forensic Toxicology Laboratories, 34098 Cerrahpaşa, İstanbul, Turkey. Electronic address: sevcansemen@gmail.com.
authors.forename: Sevcan
authors.initials: S
authors.lastname: Şemen
authors.affiliation: İstanbul University, Institute of Forensic Sciences, Forensic Toxicology Laboratories, 34098 Cerrahpaşa, İstanbul, Turkey. Electronic address: mercans@istanbul.edu.tr.
authors.forename: Selda
authors.initials: S
authors.lastname: Mercan
authors.affiliation: İstanbul University, Institute of Forensic Sciences, Forensic Toxicology Laboratories, 34098 Cerrahpaşa, İstanbul, Turkey.
authors.forename: Murat
authors.initials: M
authors.lastname: Yayla
authors.affiliation: İstanbul University, Institute of Forensic Sciences, Forensic Toxicology Laboratories, 34098 Cerrahpaşa, İstanbul, Turkey.
authors.forename: Münevver
authors.initials: M
authors.lastname: Açıkkol
mesh_terms: D040503:Coffea / Q000737:chemistry*; D003296:Cooking; D004435:Eating; D006801:Humans; D013058:Mass Spectrometry; D012639:Seeds / Q000737:chemistry*; D014131:Trace Elements / Q000737:chemistry*; D014421:Turkey
chemical_list: D014131:Trace Elements
keywords: Coffee infusion; Dietary element intake; Green coffee; Inductively coupled plasma mass-spectrometry (ICP-MS); Leachability