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KMID : 1134819990280010132
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Journal of the Korean Society of Food Science and Nutrition
1999 Volume.28 No. 1 p.132 ~ p.139
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Physicochemical Properties of Potato Starches Crosslinked with Epichlorohydrin
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Lee Sun-Ja
Kim Mee-Ra
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Abstract
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Physicochemical properties of the crosslinked potato starches of MDC(Molar Degree of Crosslinking) 0.137~3.333 treated with epichlorohydrin were examined. MDC increased proportionally as epichlorohydrin concentration increased. Water binding capacity increased but blue value decreased with increasing MDC. Gelatinization trends obtained from DSC thermograms and transmittance showed that the gelatinization temperature of the crosslinked potato starch was higher than that of native potato starch, but there was no significant difference among the crosslinked potato starches. Solubility and swelling power decreased with increasing MDC. X-ray diffraction patterns and scanning electron micrographs showed that the crosslinking of starch did not affect the crystallinity and the granule shape of starch.
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KEYWORD
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crosslinked starch, epichlorohydrin, potato starch, physicochemical property
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