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Effects of Phosphorus Contents on the Gelatinization and Retrogradation of Potato Starch
Author(s) -
Karim A.A.,
Toon L.C.,
Lee V.P.L.,
Ong W.Y.,
Fazilah A.,
Noda T.
Publication year - 2007
Publication title -
journal of food science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.772
H-Index - 150
eISSN - 1750-3841
pISSN - 0022-1147
DOI - 10.1111/j.1750-3841.2006.00251.x
Subject(s) - retrogradation (starch) , starch , phosphorus , chemistry , food science , swelling , potato starch , viscosity , solubility , materials science , amylose , organic chemistry , composite material
Effects of phosphorus content (510 to 987 ppm) on the gelatinization and retrogradation of 6 potato cultivars (Benimaru, Hokkaikogane, Irish Cobbler, Konafubuki, Sakurafubuki, and Touya) were studied. Pasting properties were analyzed by RVA, thermal properties by DSC, and mechanical properties of the starch gels by TA. Phosphorus was positively correlated with swelling power ( r = 0.84) and negatively correlated with solubility ( r = 0.83). Phosphorus content showed significant effect on certain pasting properties of potato starch such as peak viscosity, breakdown, and setback. Phosphorus content showed a significant positive correlation with peak viscosity ( r = 0.95) and breakdown ( r = 0.90). Increasing concentration of phosphorus tends to decrease the setback. Phosphorus content had no influence on thermal properties and mechanical properties of potato starch gel.