Food Science and Preservation (한국식품저장유통학회지)

The Korean Society of Food Preservation (한국식품저장유통학회)
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Quality characteristics of frozen brown rice Jeung-pyun dough containing different amounts of acorn flour

도토리가루의 첨가량을 달리하여 제조한 냉동 현미증편반죽의 품질특성

  • Jeong, Sang-Yeol (Food Service Management and Culinary Arts, GyeongJu University) ;
  • Lee, Min-Kyoung (Department of Food and Nutrition, Chung-Ang University) ;
  • Gwag, Jung Soon (Department of Hotel Food Service Culinary Art, Busan Women's College) ;
  • Lee, Sook-Young (Department of Food and Nutrition, Chung-Ang University)
  • 정상열 (경주대학교 외식조리학부) ;
  • 이민경 (중앙대학교 식품영양학과) ;
  • 곽정순 (부산여자대학교 호텔외식조리학과) ;
  • 이숙영 (중앙대학교 식품영양학과)
  • Received : 2015.10.28
  • Accepted : 2016.04.24
  • Published : 2016.06.30
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Abstract

In this study, physicochemical properties of acorn flour was investigated, and characteristics of the Jeung-pyun dough added with the acorn flour at various concentrations were evaluated after storage at -$18^{\circ}C$ for 4 weeks and fermentation. Total polyphenolic content, electron donating ability (EDA) of 0.5%, gelatinization onset temperature (To), gelatinization peak temperature (Tp), and gelatinization conclusion temperature (Tc) of acorn flour were 3,525.12 mg%, 16.71%, $68.41^{\circ}C$, $73.83^{\circ}C$, and $82.96^{\circ}C$, respectively. These all values were increased in the Jeung-pyun dough possibly due to addition of the acorn flour. The yeast count was not affected by the addition levels of acorn flour and the frozen storage period before fermentation. The amount of carbon dioxide gas evolved from Jeung-pyun dough during fermentation was significantly changed with the concentration of acorn flour, but it was negligible. The Jeung-pyun added with 6% acorn flour showed an small increase in the amount of carbon dioxide after frozen storage of 1 wk and fermentation. The pH of the fermented Jeung-pyun samples decreased along with the increasing storage period as well as the increasing acorn flour content, ranging from 4.21 to 5.34. Therefore, the frozen Jeung-pyun dough containing 6~15% of acorn flour and stored for 3 weeks was the most desirable among all the tested samples in this study.

본 연구에서 도토리가루의 일반성분, pH, 총 폴리페놀함량, 전자공여능, 호화도를 분석한 결과와 내냉동성 효모 및 비타민 C를 첨가하고 도토리가루의 첨가량을 달리한 반죽을 -$18^{\circ}C$에서 4주간 냉동저장하면서 매주 꺼내어 해동하여 발효시킨 현미증편반죽의 품질특성을 연구한 결과는 다음과 같다. 도토리가루의 총페놀함량, 전자공여능, 도토리가루의 호화개시 온도(To)와 피크온도(Tp) 그리고 종료온도(Tc)는 각각 3525.12 mg%, 16.71%, $68.41^{\circ}C$, $73.83^{\circ}C$, $82.96^{\circ}C$이었다. 도토리가루 첨가량 및 냉동저장기간에 따른 도토리현미증편 냉동반죽의 효모수 변화에는 유의적인 차이가 없었다. 냉동저장기간에 따른 시료의 $CO_2$ 발생량은 도토리가루 6% 첨가군 에서만 냉동저장 1주일에 증가하였다가 3주일 이상 냉동저장시에 약간 감소하였다. 이상의 결과를 종합하면, 냉동저장기간에 따른 도토리현미증편 냉동반죽의 효모수 변화가 없었고 $CO_2$ 발생량도 도토리가루 6% 첨가군 에서만 3주일 이상 냉동저장시에 약간 감소하였으므로, 내냉동성 효모의 사용은 도토리현미증편 냉동반죽의 개발을 가능하게 하였다. 또한 냉동반죽의 제조 시에 항산화활성을 지니는 총 폴리페놀함량과 전자공여능이 높은 도토리가루의 첨가가 바람직하다고 생각되었다.

Keywords

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