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Endaye Minbale Atlabachew Minaleshewa Mehari Bewketu Alemayehu Melkamu Mengistu Daniel Ayalew Kerisew Bizuayehu 《Biological trace element research》2020,195(2):669-678
Biological Trace Element Research - Characterization of coffee terroirs is important to determine authenticity and provide confidence for consumers to select the right product. In this regard,... 相似文献
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Minaleshewa Atlabachew Bhagwan Singh Chandravanshi Mesfin Redi 《Biological trace element research》2010,138(1-3):316-325
The levels of essential (Ca, Mg, Mn, Fe, Zn, Cr, Cu, and Co) and non-essential (Cd and Pb) metal in six different varieties of Ethiopian khat (Catha edulis Forsk, an evergreen stimulant plant) commonly consumed in the country and exported to the neighboring countries were determined by flame atomic absorption spectrometry. Known weight of oven-dried khat samples were wet-digested using 2 mL of (69–72%) HNO3 and 2 mL of (70%) HClO4 for 2 h and 30 min at variable temperature (120–270°C). The mineral contents in the digests were analyzed using flame atomic absorption spectrometer. The following concentrations ranges in fresh-weight basis were recorded in decreasing order: Ca (1,038–2,173 µg/g)?>?Mg (478.2–812.3 µg/g)?>?Fe (53.95–82.83 µg/g)?>?Zn (5.18–9.40 µg/g)?>?Mn (6.98–8.66 µg/g)?>?Cu (1.85–5.53 µg/g)?>?Cr (0.66–3.47 µg/g)?>?Co (0.41–0.80 µg/g). A wide variation in the mineral contents of khat from different region of Ethiopia was noticed. The toxic metals (Pb and Cd) were not detected in all the samples analyzed. 相似文献
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