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 400C in air and nitrogen atmosphere. Similarly, TG thermoanalytical curves were taken from 35 to 700C 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 200C 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.