To further distinguish the differences between FTIR spectra of starch and starch–fatty acid samples, the deconvoluted FTIR spectra were obtained in Fig. 2C and D. The band at 1047 cm1 , which was associated with the crystalline structure, disappeared for freeze-dried NWS paste. This indicated that starch crystallites were disrupted during RVA testing, in accordance with the XRD results. It is interesting to note that a small peak at 1055 cm1 occurred for NWS–fatty acid samples, which was assumed to be related to the amylose–fatty acid complex.