Medicinal Plants Classification Biosynthesis and ... - Index of

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4.3. Fresh Leaves and Stems
Chien-Yi Chen
Nineteen elements were present in the analyzed samples at widely differing
concentrations, ranging from 10 4 to 10 -2 μg/g among the various planted areas. Therefore,
classifying these elements revealed strong consistency among the concentrations of the trace
elements which is interesting and is discussed below. Selenium is an essential element
required in small amounts by humans for basics of life. It ranges from the highest 0.30±0.07
to the lowest 0.15±0.05 μg/g. In another example, the maximum concentration of As was
0.49±0.10 μg/g in Lalashan, whereas its concentration was negligible in both Minder and
Puli.
Table 3. Elemental concentrations of fresh leaves and stems (units μg/g or as otherwise
stated, dry weight) for five planted areas of Angelica keiskei
Element Planted area
Chuchi Lalashan Minder Puli Taian
Al 136±10 126±19 107±21 129±29 165±20
As 0.28±0.07 0.49±0.10