Abstract
Sweet potato starch characteristic of local variety using heat moisture treatment with different level of moisture content and temperatureThe aim of this study is to modify local variety sweet potato starch (cream flesh color) in order to produce the optimal dried-noodle based starch. Native starch was maintained in varied water content (20%, 25% and 30%) and heat moisture treatment (HMT) by exposing the starch in high temperature, i.e. 90oC, 95oC, 100oC and 110oC for 3 h. The treated starch was analyzed using some parameters such as: swelling power, solubility, SEM (scanning electron microscopy) and total dietary fiber. Based on this study, swelling power shows decreasing as increasing both HMT temperature and starch water content. In other hand, solubility shows not significant different among all treatments. The treated-starch granule which is exposed to high temperature has irregular shape compared to granule in lower temperature. Furthermore, total dietary fiber shows significant different among the starch moisture content and the temperature treatment. HMT modification at 100oC and starch water content of 30% is chosen as the best results
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