Assessment of Gluten-Free Food Sourced Heavy Metal Accumulation for Celiac People
Abstract
This paper shows an evaluation to the study of
some heavy metals in certain gluten-free foods for celiac people marketed in
Kayseri, Turkey. The concentration values of Cu, Mn, Co, Pb, Cr, Zn, Ni, Cd and
Fe in eleven different gluten-free food samples are reported. The
determinations were carried out by flame atomic absorption spectrometry after
wet digestion method. The average metal concentrations of all the analyzed
samples were determined in the range of 0.45-5.12, 1.84-12.2, 1.29-22.5,
0.60-3.01, 0.08-0.18, and 4.61-79.6 mg kg-1 for Cu, Mn, Zn, Ni, Cd and Fe, respectively. The
accuracy of the method was confirmed by the analysis of a standard reference
material (SRM 1570a Spinach Leaves). Metal pollution index was also calculated
to examine the overall heavy metal levels in all analyzed samples. The
concentrations of the analyzed metals are equivalent to 7.55-35.3% compared to
the daily intake offered by international decision authorities. For this
reason, the nutritional quality index for gluten-free food products with
respect to all the metals seems to be relatively low.
Keywords
Heavy metals,gluten-free foods,celiac disease,flame atomic absorption spectrometry
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