Comparable TL glow curves were obtained with both the mineral extraction procedures with slightly lower intensity of TL glow curve in case of acid hydrolysis. The TL glow curve of the minerals isolated from non irradiated shrimp samples showed the maximum peak at around 350 °C, ascribable to the geological signal, whereas for all the irradiated samples glow curve peaks were found at about 200 °C, in good agreement with reported data