2009, 74 (1)  p. 45-50

Feroz Alam, Abid Hasnain

Abstract

Several physical and chemical treatments were employed to modify Taro (Colocasia esculenta) starch. The effects of pH and heating temperature on their swelling powers and solubilities were studied. At 95 °C, heat-moisture treated, oxidized and acetylated starches were more soluble, while cross-linked starch was less soluble as compared to raw starch. Heat-moisture treated and chemically modified starches had lower swelling power (at 95 °C) than that of isolated starch. Swelling power and solubility were found to be a function of pH and it was observed that all these modified starches had greater swelling capacity and solubility at pH 2.0 and 10.0.

Keywords

Taro starch, chemical modification, swelling power, solubility

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