Dietary Content and Evaluation of Metals in Four Types of Tea (White, Black, Red and Green) Consumed by the Population of the Canary IslandsGonzalez-Weller D*, Rubio C, Gutiérrez AJ, Pérez B, Hernández-Sánchez C, Caballero JM, Revert C and Hardisson A
Department of Public Health and Toxicology, University of La Laguna, 38071, La Laguna, Tenerife, Spain
- *Corresponding Author:
- Gonzalez-Weller D
Department of Toxicology
University of La Laguna
38071, La Laguna, Tenerife, Spain
E-mail: [email protected]
Received date: September 29, 2015; Accepted date: October 16, 2015; Published date: October 19, 2015
Citation: Gonzalez-Weller D, Rubio C, Gutiérrez AJ, Pérez B, Hernández-Sánchez C, et al.(2015) Dietary Content and Evaluation of Metals in Four Types of Tea (White, Black, Red and Green) Consumed by the Population of the Canary Islands. Pharm Anal Acta 6:428. doi: 10.4172/2153-2435.1000428
Copyright: © 2015 Gonzalez-Weller D, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
Objective: The aim of this study was to analyze the contents of Cd, Co, Cr, Cu, Fe, Mg, Ni, Pb, Zn in samples of four types of tea (Camellia sinensis) consumed in the Canary Islands: white, black, red and green tea, in order to determine their intake through consumption. Methods: A total of 80 samples (20 of each type of tea) were analyzed by ICP-OES. Results: The highest concentrations of Cd, Co, Mg, Pb and Zn were found in samples of white tea, those of Cr, Fe and Ni in the red tea, and those of Cu in green tea. While the lowest levels of Cd, Co, Fe, Pb and Zn were found in black tea, those of Cr, Mg and Ni in the green tea, and those of Cu in the white tea. Conclusion: The calculated intakes of each metal (assuming the consumption of a cup of tea 2 g/ day) shows that Cr, Cu, Fe, Mg and Zn make a negligible contribution to the RDI, and the same applies to Cd to the PTMI and Pb to the PTWI.