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Study on Trace Elements Concentration in Medicinal Plants Using EDXRF Technique.

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Biological Trace Element Research
|January 11, 2020
PubMed
Summary

Trace element analysis of ten South Indian medicinal plants revealed iron as the most abundant element. Zinc showed the highest soil-to-plant transfer factor, highlighting its uptake efficiency in certain plants.

Keywords:
Folklore medicineMedicinal plantsSoil to plant transfer factorTrace elements

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Area of Science:

  • Phytochemistry
  • Environmental Science
  • Analytical Chemistry

Background:

  • Medicinal plants are crucial in traditional Indian medicine (Ayurveda).
  • Understanding trace element composition is vital for efficacy and safety.
  • The Malnad Kerala region is rich in biodiversity and traditional practices.

Purpose of the Study:

  • To quantify trace element concentrations (Fe, Cr, Mn, Co, Ni, Cu, Zn, As, Pb) in ten medicinal plants.
  • To analyze trace elements in the soil of these plants' root areas.
  • To determine the soil-to-plant transfer factor (TF) for these elements.

Main Methods:

  • Energy Dispersive X-ray Fluorescence (EDXRF) spectroscopy for elemental analysis.
  • Analysis of both plant tissues and associated soil samples.
  • Calculation of soil-to-plant transfer factors (TF).

Main Results:

  • Iron (Fe) was the most concentrated trace element in the analyzed medicinal plants.
  • Manganese (Mn) and Zinc (Zn) were the next most abundant elements.
  • Zinc (Zn) exhibited the highest mean soil-to-plant transfer factor (TF).
  • Plectranthus amboinicus (Lour.) Spreng showed the maximum TF for Zn.
  • Centella asiatica (L.) Urban contained significant levels of essential trace elements.

Conclusions:

  • The study provides valuable data on trace element profiles of South Indian medicinal plants.
  • Zinc's high TF suggests efficient uptake, relevant for bioavailability studies.
  • Centella asiatica's elemental composition supports its traditional medicinal use.
  • This research contributes to the global database of medicinal plant trace elements.