普洱茶中主要矿质元素分析

doi:10.13305/j.cnki.jts.2013.05.002

Abstract

Abstract: The contents of sixteen mineral elements in Pu-erh tea and sun-dried green tea were determined by ICP-OES, and their contents differences in Pu-erh tea with different grades and in different producing areas were also compared. The contents obtained in mg kg^-1 for the elements analyzed were 16.68(B), 3306.64(Ca), 272.18(Fe), 806.05(Al), 14522.80(K), 2054.96(Mg), 682.09(Mn), 0.25(Mo), 487.71(Na), 3628.98(P), 2350.90(S), 173.78(Si), 61.77(Zn), 2.48(Ni), 0.15(Co) and undetectable (Hg). The contents of the Mn, Na, Zn, Ca, Fe, Al, K, Mg, Ni and Co in Pu-erh tea were observed to be much higher those in Sun-dried green tea(P<0.05). Significant differences in the content of Ca, Fe, Al, K, Mg, S, Ni and Co were observed in Pu-erh tea with different producing areas（P<0.05）. However, there were no significant differences in the content of the studied elements except Ni in Pu-erh tea with different grades（P>0.05）.

Key words: Pu-erh tea, mineral elements, producing area, grades, content

CLC Number:

LV Hai-peng, LIN Zhi, ZHANG Yue, LIANG Yue-rong. Study on the Content of the Major Mineral Elements in Pu-erh Tea[J]. Journal of Tea Science, 2013, 33(5): 411-419.

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Study on the Content of the Major Mineral Elements in Pu-erh Tea

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