2. Experimental
Poppy seeds commercially available in Slovak Republic (ALFA
SORTI, Ltd., Zvolen, Slovak Republic) were used for the study. Thermooxidative
stability of the poppy seeds was studied employing
differential scanning calorimeter Perkin Elmer DSC-7 (Norwalk,
USA). The temperature scale of the calorimeter was calibrated to
the fusion points of In, Sn and Pb. The unground poppy seeds (approx.
10 pcs.) were placed in standard aluminium pans. The lid of
each pan was perforated by 7 pinholes to enable the contact of the
sample with the oxidative atmosphere. Weight of the samples was
3–5 mg. The reaction gas forming the atmosphere was air and oxygen,
respectively with the flow rate of 60 mL/min