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Determination and Comparison of Mineral Elements in Traditional Chinese Herbal Formulae at Different Decoction Times used to Improve Kidney Function - Chemometric Approach
Kolasani, Archana; Xu, Hong & Millikan, Mary
Abstract
Traditional Chinese herbal formulae Liu wei di huang (LW) (six-ingredient pill with Rehmannia) and Jin
gui shen qi wan (JG) (kidney Qi pill from the golden cabinet) were analysed for Ca, Fe, Mg, Mn, Na, K and Zn at
different decoction intervals by atomic absorption spectroscopy. LW and JG were used to improve the kidney
function. JG was higher in all elements than LW. K (1691.29 – 2372.71 mg l-1) was highest in both formulae LW
and JG followed by Ca (245.31 – 562.91 mg l-1). Ca, Fe, Mg, Mn and K were highest at 40 min for LW and Fe,
Mn, Na and K were highest at 40 min for JG. Chemometrics such as principal component analysis, hierarchical
cluster analysis and linear discriminate analysis were applied to classify the data and to understand the relation
between the elements. Metal intake related to the consumption of decoction has also been studied. Mn made the
highest contribution to average daily dietary intakes from the formulae.
Keywords
Kidney tonifying herbs; Li wei di huang wan; Jin gui shen qi wan; Mineral elements; Atomic absorption spectroscopy
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