Thermal analysis of some phytotherapeutic products irradiated with electron beam

  • Monica R. Nemtanu
  • Mirela Brasoveanu
  • Viorica Meltzer
  • Elena Pincu
  • C. Oproiu


The purpose of the present work deals with the evaluation of the electron beam irradiation effects on some natural products based on thermal analysis. Some natural products with therapeutic contributions (artichoke, sea buckthorn, common sage, stonebreaker and cloves) were irradiated with doses up to 9 kGy using accelerated electron beam. The thermal profiles lead to identify three phenomena: dehydration — volatilization, irreversible degradation — molecular reorganization and residue decomposition. The radio-induced degradations determine slight shifts of the temperatures where these phenomena occur. The energetic value of the studied products is affected by e-beam treatment depending on irradiation dose.


adiabatic combustion calorimetry DSC irradiation medicinal plants 


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Copyright information

© Akadémiai Kiadó, Budapest, Hungary 2009

Authors and Affiliations

  • Monica R. Nemtanu
    • 1
  • Mirela Brasoveanu
    • 1
  • Viorica Meltzer
    • 2
  • Elena Pincu
    • 2
  • C. Oproiu
    • 1
  1. 1.Electron Accelerator Lab. — National Institute for LaserPlasma and Radiation PhysicsBucharest-MagureleRomania
  2. 2.Department of Physical ChemistryFaculty of Chemistry — University of BucharestBucharestRomania

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