HMT From this transformation, the amorphous portion in the starch granule could be raised. The reduced or removed cross-linking effect from the intercrystalline parts as well as the raised amorphous portions made the Cp change increase and Tg decrease. The intercrystalline parts are theoretically located on the edge of crystalline micelles exposed to the amorphous regions. It is postulated that the amylose chains form partial helices with the short chains on the edges of the micelles. Because these parts are located in new amorphous regions, it would be expected that the transformation of these parts readily occur on HMT.