The addition of fatty acids increased significantly pasting temperature of NWS (Table 2), but had little effect on WWS. The pasting temperature increased from 88.4 C for NWS to 94.5–94.9 C for NWS–fatty acid samples. The increase in pasting temperature of NWS was consistent with the inhibited swelling of starch granules by the fatty acids, leading to the delay of viscosity development. As WWS has high swelling power, the addition of fatty acids cannot alter the swelling of granules significantly, hence causing little effect on pasting temperature.