Abstract
Potato, wheat and corn starches were segregated into large and small
granule fractions. The specific surface area, volume, and average
diameter of pores, as well as the pasting characteristics of starch
dispersions in water were determined. In all the starches investigated
the small granule fractions were characterized by the largest specific
surface area, pore volume and pore diameter in comparison to fractions
of large granules and the initial starches. The small granule fraction
of potato starch gave better pasting characteristics (apart from
maximum viscosity) than fractions of large granules and the initial
potato starch. On the other hand, the large granule fractions of
corn and wheat gave the highest maximum viscosity.
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