Accumulation of Fluoride and Aluminium Related to Different Varieties of Tea Plant |
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Authors: | Jianyun Ruan Ming H Wong |
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Institution: | (1) Tea Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou, 310008, P.R. China;(2) Institute for Natural Resources and Environmental Management, and Department of Biology, Hong Kong Baptist University, Hong Kong, P.R. China |
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Abstract: | Samples of young shoot, mature leaf, twig, root, and litter were taken from four recently bred varieties Zhe-nong 113, Zhe-nong 121, Zi-sun, and Bi-feng grown at two tea plantations located at Zhejiang and Jiangsu Provinces. The results showed that the concentrations of F and Al in tea plants were significantly different among the four varieties. It is therefore possible that F and Al concentrations in tea products can be reduced through variety selection. The results also revealed that old leaves would be the major contribution to the high levels of F and Al in brick tea since it is produced mainly for old leaves. Therefore, in order to eliminate the hazard of over-exposure to F and Al derived from tea, younger shoot should be used for making tea products while mature leaves should be avoided. |
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Keywords: | aluminium Camellia sinensis L China fluoride soil factors tea leaves tea plantation |
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