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Thermal investigations on γ-radiation processed natural medicinal products (Ashwagandha, Amla and Hartiki)

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Abstract

DSC and TG studies were carried out on γ-radiation processed Indian natural products of medicinal importance, namely Ashwagandha (Withania Somnifera), Amla (Emblica Officinalis) and Hartiki (Terminalia chebula). DSC thermoanalytical curves were recorded from 35 to 400°C in air and nitrogen atmosphere. Similarly, TG thermoanalytical curves were taken from 35 to 700°C in air and nitrogen atmosphere. Irradiated products gave significantly different thermoanalytical profiles in comparison to non-irradiated samples. The differences were observed above decomposition temperature of 200°C and were non-linear with respect to radiation dose. Partial oxidation of the products during irradiation in air could be responsible for the observed differences.

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Authors and Affiliations

  1. Product Development Group, Radiation Technology Development Section, Bhabha Atomic Research Centre, 400085, Mumbai, India

    D. Mitra, S. Francis & L. Varshney

Authors
  1. D. Mitra
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  2. S. Francis
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  3. L. Varshney
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Correspondence to L. Varshney.

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Mitra, D., Francis, S. & Varshney, L. Thermal investigations on γ-radiation processed natural medicinal products (Ashwagandha, Amla and Hartiki). J Therm Anal Calorim 78, 821–829 (2004). https://doi.org/10.1007/s10973-005-0450-0

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  • DOI: https://doi.org/10.1007/s10973-005-0450-0

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