Effect of heat moisture treatment on physicochemical and pasting properties of starch extracted from eleven sweet potato varieties

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dc.creatorTsakama, M.
dc.creatorMwangwela, A.M.
dc.creatorManani, T.A.
dc.creatorMahungu, N.M.
dc.date2011-09
dc.date2017-08-28T09:33:54Z
dc.date2017-08-28T09:33:54Z
dc.date.accessioned2026-06-27T15:54:02Z
dc.descriptionStarch separated from eleven sweet potato varieties was subjected to heat moisture treatment (HMT) at 30% moisture and 110°C for 3 hours. Following HMT, there were no significant changes in physicochemical properties of the starches. This was attributed to limited moisture content (30%) to influence hydration that could consequently alter granule morphology. Further, chemical parameters such as amylose content, pH and phosphorus were not affected because HMT is a physical treatment. In contrast, HMT caused changes in the packing arrangement of the polymer chains leading to enhanced intragranular binding. Alteration of the internal organisation of the granules caused significant changes in pasting properties of the starches such as pasting time, pasting temperature, peak viscosity, hot paste viscosity, cold paste viscosity, breakdown, set back and stability ratios. The findings provide evidence that functionality of sweet potato starch can be altered to suit a particular industrial need.
dc.identifierhttps://hdl.handle.net/10568/83235
dc.identifier.urihttp://hdl.handle.net/123456789/116838
dc.languageen
dc.rightsLimited Access
dc.sourceTsakama, M., Mwangwela, A.M., Manani, T.A. & Mahungu, N.M. (2011). Effect of heat moisture treatment on physicochemical and pasting properties of starch extracted from eleven sweet potato varieties. International Research Journal of Agricultural Science and Soil Science, 1(7), 254-260.
dc.subjectsweet potato starch
dc.subjectheat moisture treatment
dc.subjectphysicochemical
dc.subjectpasting properties
dc.subjectstarch
dc.subjectphysical methods
dc.subjectfood processing
dc.titleEffect of heat moisture treatment on physicochemical and pasting properties of starch extracted from eleven sweet potato varieties
dc.typeJournal Article

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Instituto Internacional de Agricultura Tropical (IITA)