Korean journal of food and cookery science (한국식품조리과학회지)

Korean Society of Food and Cookery Science (한국식품조리과학회)
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Characteristics of non-waxy rice starch/gum mixture gels

멥쌀 전분과 검물질 혼합물 겔의 특성

  • Shin Malshick (Department of Food and Nutrition, Chonnam National University) ;
  • Kwon Ji-Young (Department of Food and Nutrition, Chonnam National University) ;
  • Song Ji-Young (Department of Food and Nutrition, Chonnam National University)
  • 신말식 (전남대학교 식품영양학과) ;
  • 권지영 (전남대학교 식품영양학과) ;
  • 송지영 (전남대학교 식품영양학과)
  • Published : 2005.12.01
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Abstract

To improve the textural properties and stabilize the structure and gel matrix of non-waxy rice starch gels, non-waxy rice starch/gum mixture gels were prepared from various food gums, gum arabic, guar, algin, deacyl gellan, xanthan and gellan gums. The morphological and textural properties and freeze-thaw stability of their gels were compared. Rice starch/gum mixture gels with various gums formed a more homogeneous gel matrix with smaller particle size than rice starch gel without Em, but the trends differed depending on the gum types. The textural properties of rice starch/gum mixture gels were changed with the gum types. The shape of the rice starch/gum mixture gel matrix was desirable when mixed with gellan and algin. The textural properties of gels hardened in the rice starch/algin mixture gel and softened in the rice starch/algin mixture gel. The rice starch gels showed V-type crystallinity by x-ray diffractometer, but the peak at $2\theta$ = $20^{o}$ was decreased with increasing gum addition. The freeze-thaw stability increased with increasing gum addition. Gellan and algin were especially effective.

쌀전분겔의 매트릭스와 구조를 안정화하고 텍스쳐 특성을 개선하기 위하여 멥쌀전분에 다양한 검물질을 혼합하여 겔을 제조하여 형태적, 텍스쳐 특성, 냉동-해동 안정성을 비교하였다. 검물질을 첨가하면 종류에 따라 다르나 쌀전분겔을 조밀하고 균일하여 안정된 매트릭스 갖게 할 수 있었으며 겔란검과 알긴이 효과적이었다. 쌀전분/검질 혼합 겔의 텍스쳐 특성도 검질에 따라 달랐으며 겔란검은 단단하고 알긴은 부드러운 겔을 형성하였다. X-선 회절도에 의하면 쌀전분겔은 V형의 결정형을 나타내며 검을 첨가하였을 때 $2\theta$ = $20^{o}$의 피크가 낮아졌다. 냉동-해동 안정성도 검물질을 혼합하였을 때 증가하였으며 겔란검과 알긴을 첨가한 쌀전분겔이 바람직 하였다.

Keywords

References

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