Effects of Cereal Powders with Dietary Fibers on Retrogradation Properties of Jeungpyun, a Korean Traditional Fermented Rice Cake

  • Park, Mie-Ja (Department of Food & Nutrition, Kongju National University) ;
  • Kim, Hye Young L. (Department of Food & Nutrition, Yongin University)
  • Published : 2003.12.01

Abstract

This study investigated retrogradation properties of Jeungpyun substituted for cereals with dietary fibers of 60% of brown rice, and barley. Quality changes during storage periods of the functional Jeungpyun, were studied using $\alpha$-amylase iodine enzyme digestion methods, X-ray diffraction patterns, and differential scanning calorimetry (DSC). The barley substituted samples showed significantly lower retrogrdation rates than those of control when examined by $\alpha$-amylase method. The Relative crystallity by X-ray diffraction patterns had typical A type in all samples with appealing big crystallity around its diffraction angle 23$^{\circ}$degrees as storage periods were increased. The brown rice and barley Jeunpyun made smaller crystallity than that of control, representing slower retrogradation rates. The batter controls had significantly lower ΔH than the other compared samples when measured by DSC, but had significantly higher ΔH after 30 days of storage, implying that the control required more energy for regelatinization after the 30 days of storage.

Keywords

Jeungpyun;brown rice;barley;${\alpha}$-amylase;X-ray diffraction;DSC

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