DMA thermal analysis of different parts of potato tuber

► Dynamic mechanical analysis was applied to three potato tissues of two cultivars. ► Tests were done in the range 30-90 °C and constant air humidity of 90%. ► Typical 'starch peak' at temperatures higher than 70 °C was observed. ► 'Starch peak' was not observed at DM content below 14%. ► Both cultivar and part of the tuber influence the DMA temperature plots.