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Trace element levels in some dried fruit samples from Turkey.

Ali Duran1, Mustafa Tuzen, Mustafa Soylak

  • 1Gaziosmanpaşa University, Faculty of Science and Arts, Department of Chemistry, Tokat, Turkey.

International Journal of Food Sciences and Nutrition
|November 11, 2008
PubMed
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This study quantified essential trace elements in Turkish dried fruits using flame atomic absorption spectrometry. Results provide valuable data on copper, iron, and manganese levels in common dried fruits.

Area of Science:

  • Analytical Chemistry
  • Food Science
  • Environmental Science

Background:

  • Dried fruits are a significant part of the human diet, potentially contributing to trace element intake.
  • Understanding trace element profiles in dried fruits is crucial for nutritional assessment and food safety.
  • Regional variations in agricultural practices and soil composition can influence the trace element content of fruits.

Purpose of the Study:

  • To determine and quantify the levels of eight trace elements (copper, nickel, lead, iron, manganese, cobalt, chromium, and cadmium) in nine different types of dried fruits.
  • To compare the determined trace element concentrations with established literature values.
  • To ensure the accuracy and reliability of the analytical methods used.

Main Methods:

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  • Samples of nine different dried fruits from Kayseri, Turkey, were analyzed.
  • Dry and wet digestion methods were employed for sample preparation.
  • Flame atomic absorption spectrometry (FAAS) was used for trace element quantification.
  • Accuracy was validated using a standard reference material (NIST-SRM 1515-Apple Leaves).

    • Main Results:

    • Trace element levels varied significantly across different dried fruit types.
    • Highest copper content was found in black grape (4.52 microg/g).
    • Apricot showed the highest levels for lead (12.4 microg/g), iron (64.1 microg/g), and cadmium (0.8 microg/g).
    • Black plum had the highest nickel (9.4 microg/g), rose hip the highest manganese (25.5 microg/g) and cadmium (0.8 microg/g), white mulberry the highest cobalt (1.81 microg/g), and yellow plum the highest chromium (6.17 microg/g).

    Conclusions:

    • The study successfully quantified trace element concentrations in various dried fruits from Turkey.
    • The findings provide baseline data for the nutritional and safety assessment of these dried fruits.
    • The applied analytical methodology ensured accurate and reliable results for trace element determination.