Determination of trace elements in coffee beans and instant coffee of various origins by INAA |
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| Authors: | J H Zaidi I Fatima M Arif I H Qureshi |
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| Institution: | (1) Nuclear Chemistry Division, Pakistan Institute of Nuclear Science and Technology, P.O. Nilore, Islamabad, Pakistan;(2) Nuclear Chemistry Division, Pakistan Institute of Nuclear Science and Technology, P.O. Nilore, Islamabad, Pakistan;(3) Nuclear Chemistry Division, Pakistan Institute of Nuclear Science and Technology, P.O. Nilore, Islamabad, Pakistan;(4) Nuclear Chemistry Division, Pakistan Institute of Nuclear Science and Technology, P.O. Nilore, Islamabad, Pakistan |
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| Abstract: | Summary Extensive use of coffee, by one-third of world's population, entails the evaluation of trace element contents in it. Instrumental
neutron activation analysis (INAA) was successfully employed to determine the concentration of 20 trace elements (essential,
toxic and nonessential) in four samples of coffee beans of various origins and two instant coffee brands most commonly consumed
in Pakistan. This study provides the base-line values of certain toxic and essential elements in coffee. The daily intake
of essential and toxic elements through coffee was estimated and compared with the recommended values. The cumulative intake
of Mn is four times higher than the recommended value and that of toxic elements is well below the tolerance limits. |
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