Jackfruit seed starch (JFSS) cultivated in Vietnam had a high amylose content (~44%).
Differential scanning calorimetry thermogram of JFSS consisted of two separate endothermic peaks with distinct
onset and conclusion temperatures.
When JFSS was heated at 70 C, the first endothermic peak disappeared, whereas the second endotherm remained.
The partially-gelatinized JFSS still possessed Atype X-ray diffraction pattern. SEM images showed that the rim of the starch granule at the hollow bottom of the bell shape first melted during the partial gelatinization at 70C.
Both native and partiallygelatinized JFSS produced soft and highly elastic gels, but their moduli differed slightly. Additionally, the partially-gelatinized JFSS was successfully used to produce genistinecycloamylose (CA) and amylose
elysolecithin complexes with and without 4a-glucanotransferase.
Water sorption isotherms of partially gelatinized JFSS showed higher water-holding capacity than that of the native starch.