Rheological Properties of White Pan Bread Dough Prepared with Angelica gigas nakai Powder

당귀 분말을 첨가한 식빵 반죽의 물리적 특성

  • Shin, Gil-Man (Department of Food and Cooking Science, Sunchon National University) ;
  • Kim, Dong-Young (Department of Food and Cooking Science, Sunchon National University)
  • 신길만 (순천대학교 조리과학과) ;
  • 김동영 (순천대학교 조리과학과)
  • Published : 2008.08.30

Abstract

The effects of Angelica gigas nakai powder(AP) addition on bread dough were investigated by preparing dough with 0-10%(w/v) powder. Dough raising power, gluten levels, rapid visco properties, and falling number, were investigated. The rheological properties of dough as measured by mixography, farinography, alveography, color assessment, and with scanning electron microscopy, were examined. Increase in AP concentration resulted in a linear decrease in gluten content. Dough raising power and extensibility were decreased by water absorption rate, and resistance increased. Dough stability and rose when AP was present at 1-2%(w/v). Water absorption, dough stability, and dough valorimeter values also rose when AP was present at 1-2%(w/v), but AP induced weakness in the dough, as revealed through farinography, and also resulted in a lowering of initial pasting temperature and the temperature at peak viscosity. A decrease in viscosity at the peak point, and(as revealed by RVA), a decrease in extensibility, an increased resistance to extension, and a rise in the energy required for extension, were also seen when AP powder was added, as was an increase in the R/E ratio. Overall, the addition of AP to dough to levels of 1% or 2%(both w/v) is thought to be useful in the preparation of a functional white pan bread, and results in quality improvements.

당귀 분말의 첨가량에 따른 식빵 반죽의 품질특성에 미치는 영향을 알아보기 위하여 당귀 분말을 첨가한 반죽의 이화학적 특성, 반죽의 물리적 특성을 비교 분석한 결과는 다음과 같다. 당귀 분말의 일반성분 함량은 수분 10.5%, 조단백질 16.9%, 조지방 13.8%, 조회분 6.0%, 식이섬유량 35.5% 등으로 나타났다. 당귀 분말을 첨가한 밀가루의 호화도(RVA)는 당귀 분말의 첨가량이 증가함에 따라 호반죽의 호화도, break down과 set back은 당귀 분말의 첨가량이 증가함에 따라 호화온도와 점도는 감소하였다. Falling number, gluten 함량, 반죽팽창력, mixograph의 결과 모두는 모두 당귀 분말의 첨가량이 증가할수록 감소하였다. Farinogragh 측정에서는 반죽의 점조도, 연화도, 수분 흡수율은 당귀 분말의 첨가량이 증가할수록 증가하였고, 반죽안정도, 반죽 형성시간과 안정도는 감소하였다. Alveograph는 최대압력을 나타내는 P값은 당귀 분말의 첨가량이 증가할수록 낮아졌고, 부피와 신장성도 당귀 분말의 첨가량이 증가할수록 감소하였다. 당귀 분말 첨가량이 증가할수록 반죽의 제빵 적성은 적합하지 않는 것으로 판단되어진다.

Keywords

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