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Physicochemical Properties of Cross-linked Apios Starch  

Park, Mi Hye (Dept. of Food Science and Nutrition, Kyungpook National University)
Kim, Meera (Dept. of Food Science and Nutrition, Center for Beautiful Aging, Kyungpook National University)
Publication Information
Journal of the East Asian Society of Dietary Life / v.24, no.3, 2014 , pp. 400-406 More about this Journal
Abstract
Apios (Apios americana Medikus) belongs to Leguminosae and is called 'American groundnut', 'Potato bean', and 'wild bean'. Apios is native to the Northern United States but is not widely distributed in Korea. In this study, cross-linked apios starch was prepared by reaction with epichlorohydrin, followed by characterization. FT-IR spectroscopy confirmed the degree of cross-linking of apios starch. X-ray diffraction patterns of native apios showed typical 'A' type as peaks at 15.1, 17.1, 17.9 and $23.2^{\circ}$, and cross-linking did not affect relative crystallinity and X-ray diffraction patterns of the starch. Scanning electron micrographs showed that apios starch granules were smooth with a globular shape, and there was little damage to starch granules after cross-linking. The lightness value of cross-linked apios starch was lower than that of native apios starch, whereas the redness value was not significantly different between cross-linked apios starch and native apios starch. Blue value showed that cross-linking of starch did not affect the iodine reaction of starch.
Keywords
Apios starch; cross-linked starch; epichlorohydrin; physicochemical property;
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Times Cited By KSCI : 3  (Citation Analysis)
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