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Physicochemical Properties of Cross-linked Rice Starches  

Choi, Hyun-Wook (Institute of Life Science and Resources, Kyung Hee University,Daesang Company Starches and Sweetener Div. R&D Center)
Chung, Koo-Min (Department of Food Science and Biotechnology, Andong National University)
Kim, Chung-Ho (Department of Food and Nutrition, Seowon University)
Moon, Tae-Hwa (Department of Food Science and Biotechnology, Seoul National University)
Park, Cheon-Seok (Institute of Life Science and Resources, Kyung Hee University)
Baik, Moo-Yeol (Institute of Life Science and Resources, Kyung Hee University)
Publication Information
Applied Biological Chemistry / v.49, no.1, 2006 , pp. 49-54 More about this Journal
Abstract
Physicochemical properties of cross-linked rice starches were investigated. Swelling power of cross-linked rice starch increased at relatively lower temperature $(60^{\circ}C)$ than native rice starch $(70^{\circ}C)$. Cross-linked rice starch showed lower solubility $(1.7{\sim}6.1%)$ than native rice starch $(2.2{\sim}13.8%)$ and solubility is not significantly different with the amount of phosphorus oxychloride. Pasting temperature $(69.2{\sim}70.6^{\circ}C)$ and peak viscosity $(2,874{\sim}3,175\;cp)$ of cross-linked rice starch were lower than native starch $(71.6^{\circ}C,\;3,976\;cp)$, but holding strength $(2,177{\sim}2,708\;cp)$ and final viscosity $(3,424{\sim}3,826 \;cp)$ of cross-linked rice starch were higher than native starch (1,000 cp, 2,312 cp). DSC thermal transitions of cross-linked rice starches were shifted to a lower temperature than native rice starch but there was no significant difference in gelatinization enthalpy between native and cross-linked rice starches. X-ray diffraction pattern of both native and cross-linked rice starches showed typical A-type crystal indicating that cross-linking had not affected the crystalline region of starch.
Keywords
cross-linked rice starch; swelling power; solubility; RVA; DSC; X-ray;
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Times Cited By KSCI : 1  (Citation Analysis)
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