These latter authors also
observed an endothermic peak as the one observed in this work (Fig. 2) with samples without glycerol. In this
case, this phenomenon, observed at a temperature of about 197ºC in films without glycerol, was due to
thermal degradation of starch, which shifted to higher temperatures by the increase of the glycerol content,
attaining 218ºC in films with 45% of glycerol.