Influence of brewing pots on mineral content of black tea infusions

Tayfur, Muhıttın; Karaağaoğlu, Nilgün; Başoğlu, Sevil; Mercanlıgil, Seyit M.

doi:10.5505/tjb.2013.36349

Cited by 2 publications

(1 citation statement)

References 25 publications

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“…The results obtained in the present study are in agreement with papers published on this subject (Moreda-Pineiro et al, 2003;Lamble et al, 1995;AL-Oud, 2003;Gebretsadik et al, 2010;Gillies et al, 1983;Powell et al, 1998;Han et al, 2006;Ozdemir et al, 1998;Griepink et al;1989;Natesan et al, 1990;Dang. 2005;Nas et al, 1993;Tautkus et al, 2004;Mokgalaka et al, 2004;Wang et al, 2005;Pohl et al, 2007 andTayfur et al, 2013). The comparison of concentrations of metals in the Egyptian tea infusions obtained in the present study to that reported in the literature is given in Tables 3-5. The percentage of extracted metals from tea leaves to tea infusion in different kinds of boiled drinking was found to vary widely.…”

Section: Levels Of Metals In Tea Infusion Samplessupporting

confidence: 50%

Environmental Studies: Levels of Metal Contents in Drinking Water and in Tea Leaves Commercially Available in Egypt and Their Infusions

2013

Journal of Productivity and Development

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and Sb contents of the used drinking water and commercially available Egyptian tea leaves (Al-Arosa, Lipton, Dilma Black Teas and Dr Life green Tea) and their infusions were analyzed by Inductively coupled plasma spectrometry (ICPS), Flame photometer, and UV/Visible spectrophotometer. The used drinking water was characterized by its low content of metal ions and some metal ions (As, Hg, Se and Sb) were low to be detected. The metal contents of tea leaves were found to be higher than those of tea infusions. In both black tea leaves and their infusions levels of metals (Fe, Co, Cd, B, Cr, Mo, V and Pb) were too low assuring that the commercially available Egyptian tea possess no health risk from toxic elements. The concentrations of metals in the four tea brands were found in the following order; K > Mg > Mn > Zn> Ba > Al > Ni.Conclusively, from these results it could be concluded that drinking tap water and tea brands infusions under investigation are safe for public health and provide an acceptable quantity of mineral and trace elements per day.

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