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Quality characteristics of rice bread with different cultivars and milling methods

분쇄방법 및 품종에 따른 쌀 식빵의 품질특성

  • Oh, Hyun Ah (Department of Food Science and Biotechnology, Chungbuk National University) ;
  • Kim, Min Young (Department of Food Science and Biotechnology, Chungbuk National University) ;
  • Lee, Yoon Jeong (Department of Food Science and Biotechnology, Chungbuk National University) ;
  • Song, Myeong Seob (Department of Food Science and Biotechnology, Chungbuk National University) ;
  • Lee, Choon Ki (Department of Central Area Crop Science, National Institute of Crop Science, Rural Development Administration) ;
  • Lee, Youn Ri (Department of Food and Nutrition, Daejeon Health Sciences College) ;
  • Lee, Junsoo (Department of Food Science and Biotechnology, Chungbuk National University) ;
  • Jeong, Heon Sang (Department of Food Science and Biotechnology, Chungbuk National University)
  • 오현아 (충북대학교 식품생명공학과) ;
  • 김민영 (충북대학교 식품생명공학과) ;
  • 이윤정 (충북대학교 식품생명공학과) ;
  • 송명섭 (충북대학교 식품생명공학과) ;
  • 이춘기 (국립식량과학원 중부작물부) ;
  • 이연리 (대전보건대학 식품영양과) ;
  • 이준수 (충북대학교 식품생명공학과) ;
  • 정헌상 (충북대학교 식품생명공학과)
  • Received : 2018.07.10
  • Accepted : 2018.09.17
  • Published : 2018.10.31

Abstract

The current study investigated the effect of rice cultivars (Samkwang and Seolgaeng) and milling methods on various characteristics of rice bread. In dry milling, all component characteristics, except the water solubility index, were higher. In terms of the morphology of starch, Samkwang exhibited an angular shape, while Seolgaeng exhibited a round shape. Wet milled flour yielded fine polygonal starch compared to dry milled flour. In regard to the quality characteristics of bread, both wet milled Samkwang and dry milled Seolgaeng showed closely similar specific volumes of 2.90 mL/g and 2.86 mL/g, respectively. Hardness was in the range of 555.50 - 597.29 g for Seolgaeng and 776.78 - 823.06 g for Samkwang. Thus, although the flour characteristics were different, dry milled Seolgaeng, the rice flour of which is economical to produce and has baking characteristics similar to that of wheat flour, appears to be preferable.

본 연구에서는 건식 제분용 쌀 품종인 설갱과 일반 쌀 품종인삼광에 대한 건식 및 습식제분 쌀가루의 원료 특성을 비교하고 제빵 특성을 살펴보았다. 설갱 쌀가루의 조단백질과 조지방 함량이 각각 6.20%와 0.24%로 삼광에 비해 높았고, 아밀로스 함량은 18.81%로 낮았으며, 조단백질, 조지방, 아밀로스 함량 모두 건식 제분 시 습식제분보다 높았다. 손상녹말 함량 및 수분흡습지수는 건식제분이 습식제분에 비해 14.4% 및 2.46 g/g으로 높았고, 수분용해지수는 1.31 g/100 g으로 낮았으며, 품종에 따른 차이는 없었다. 녹말 형태는 삼광은 다각형 이었지만 설갱은 둥근 형태였으며, 습식제분 시 미세한 입자가 많았다. 제빵 시 비체적은 삼광 습식과 설갱 건식이 각각 2.90 및 2.86 mL/g으로 유사하였다. 구운 후 초기 경도는 삼광이 823.06 g 및 설갱이 597.29 g으로 설갱이 경도가 낮았고, 제분 방법에 따라서는 습식제분이 건식제분에 비해 낮았다. 건식제분 쌀가루 특성은 밀가루와는 차이가 있었지만 제빵 특성은 유사하게 나타났으며, 쌀가루 제조 시 건식제분에 적합한 설갱 품종이 제빵용으로 적합할 것으로 판단된다.

Keywords

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