Journal of the Korean Society of Food Science and Nutrition (한국식품영양과학회지)

The Korean Society of Food Science and Nutrition (한국식품영양과학회)
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Effects of Pregelatinized Rice Flour on the Textural Properties of Gluten-free Rice Cookies

Gluten-free 쌀쿠키의 조직감에 관한 호화쌀가루의 영향

  • Lee, Joon-Kyoung (Dept. of Chemical Engineering & Biotechnology, Korea Polytechnic University) ;
  • Lim, Jae Kag (Dept. of Chemical Engineering & Biotechnology, Korea Polytechnic University)
  • 이준경 (한국산업기술대학교 생명화학공학과) ;
  • 임재각 (한국산업기술대학교 생명화학공학과)
  • Received : 2013.03.08
  • Accepted : 2013.07.22
  • Published : 2013.08.31
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Abstract

The effects of pregelatinized rice flour (PRF) as an additive on the textural properties of rice cookies were investigated in this study. PRF was used at 10, 20, 30, 40, 50, and 60% per 100 g of rice flour. The hardness of dough and cookies, as measured by a texture analyzer, increased upon the addition of PRF. In contrast, the moisture content of the dough and cookies decreased upon the addition of PRF. The L value of the dough and cookies decreased upon the addition of PRF, whereas the a value increased upon the addition of PRF. The bulk density of the cookies increased upon the addition of PRF. In addition, the spreadability of the cookies was lower than the control. In the sensory evaluation, rice cookies with 50% PRF showed the highest scores for hardness, brittleness, softness, and moisture. Rice cookies with 60% PRF showed the highest scores for sandiness. Our results suggest that the texture of the rice cookies can be improved by adding PRF.

본 연구는 제과분야에서의 쌀가루의 이용도를 높이기 위하여 쌀가루를 이용하여 쿠키를 제조하였으며, 호화쌀가루를 10, 20, 30, 40, 50 및 60% 대체하여 제조한 반죽 및 쌀쿠키의 품질특성을 측정하였다. 호화쌀가루를 첨가한 반죽과 습식쌀쿠키의 수분함량은 호화쌀가루 첨가량 증가에 따라 감소하는 경향을 나타내었다. 반죽과 쌀쿠키의 L 값은 호화쌀가루 첨가량이 증가함에 따라 대체로 감소하는 경향을 보였고, 반죽과 쌀쿠키의 a 값은 대체로 증가하는 경향을 보였다. 호화쌀가루 첨가량이 증가함에 따라 습식쌀쿠키의 밀도가 높아지는 경향을 나타내었다. 습식쌀가루에 호화쌀가루를 첨가하여 제조한 반죽과 쌀쿠키의 경도는 유의적으로 증가하였다. 호화쌀가루 첨가에 의한 퍼짐성은 무첨가군보다 낮았다. 관능평가는 50% 첨가군에서 부스러지는 정도, 단단한 정도, 목넘김의 부드러움, 촉촉한 정도, 전반적인 기호도에서 가장 높은 기호도를 보였다. 삼킨 후 입자의 남음에 관한 기호도는 호화쌀가루 첨가량이 가장 많은 60% 첨가군에서 높게 나타났다. 호화쌀가루 첨가량이 증가함에 따라 쌀쿠키의 밀도차와 경도차가 모두 증가하는 방향으로 나타났다. 본 연구결과를 통해 쌀쿠키 제조 시 호화쌀가루의 이용으로 쿠키의 물성을 조절할 수 있는 것을 확인하였다. 호화쌀가루의 첨가는 반죽과 쌀쿠키의 밀도와 경도를 증가시켜 단단한 쌀쿠키의 물성을 나타내는 것으로 확인되었으며, 쌀쿠키의 관능특성의 선호도를 조절하는데 호화쌀가루가 유용한 소재로 활용할 수 있을 것으로 생각된다. 이상의 결과로 볼 때, 쌀쿠키의 조직감을 조절함에 있어서 호화쌀가루 등의 소재를 첨가함으로써 쌀쿠키의 관능특성의 부스러지는 정도, 단단한 정도 및 삼킨 후 입자의 남음에 대한 선호도를 조절할 수 있을 것으로 생각된다.

Keywords

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