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

The Korean Society of Food Science and Nutrition (한국식품영양과학회)
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Storage Quality Characteristics of Bread Added with Dried Mulberry Pomace

저장 중 건오디박 첨가 빵의 품질 특성

  • Kim, Hyun Jeong (Dept. of Food & Nutrition, Chungnam National University) ;
  • Shin, Suk Kyung (Dept. of Food & Nutrition, Chungnam National University) ;
  • Kim, Mee Ree (Dept. of Food & Nutrition, Chungnam National University)
  • 김현정 (충남대학교 식품영양학과) ;
  • 신숙경 (충남대학교 식품영양학과) ;
  • 김미리 (충남대학교 식품영양학과)
  • Received : 2013.08.05
  • Accepted : 2013.11.26
  • Published : 2013.12.31
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Abstract

The purpose of this study is to evaluate the storage quality characteristics of bread with added dried mulberry pomace (DMP, 0, 1, 3 or 5%) during storage at $4^{\circ}C$ for 7 days. During the entire storage period, the moisture content was higher in breads containing DMP compared with the control bread. Textural properties by TPA showed that the hardness of DMP bread maintained a lower hardness than that of the control during the entire storage period. Moreover, DSC (Differential Scanning Calorimetry) result showed that ${\Delta}H$ (crystal melting enthalpy) of the bread containing DMP was lower than that of the control bread, which indicate the retarding of retrogradation. The sensory preference test results demonstrated that the bread with 3% DMP had higher scores in over-all preference than the others. These results suggest that DMP delays the retrogradation of bread during storage.

본 연구는 항산화능이 높으나 버려지는 오디박을 건조시킨 후 분쇄하여 분말 형태로 모닝빵에 첨가(1, 3, 5%)하여 $4^{\circ}C$에서 7일간 저장하면서 품질 특성 및 노화 특성을 분석하였다. 또한 관능평가를 통해 기호도를 알아보고, 건오디박 모닝빵에 적절한 건오디박 첨가의 배합과 제빵의 최적조건을 제시하고자 하였다. 저장일이 증가할수록 수분함량은 유의적으로 감소하고 무게도 감소하였으나, 건오디박을 첨가한 모닝빵의 수분함량은 건오디박 첨가량이 증가할수록 수분함량의 감소 정도가 대조군에 비해 낮았다. 명도는 건조 오디박의 첨가량이 증가할수록 감소하였고 저장일이 증가할수록 증가하였다. 적색도는 건조 오디박의 첨가량이 증가할수록 증가하였고 저장일이 증가할수록 감소되었다. 황색도는 건조 오디박의 첨가량이 증가할수록 감소하였고 저장일이 증가할수록 감소했다. 조직감 중 경도는 저장기간이 경과됨에 따라 높아졌으나 건오디박 첨가량이 증가할수록 경도의 증가폭은 적었다. 이를 통해 노화됨에 따라 전분조직의 변화로 인해 빵의 경도가 단단해지는 것을 건오디박이 막아주는 것을 확인하였다. 탄력성은 저장기간이 증가할수록 낮아지고 건오디박을 첨가할수록 낮아지는 경향을 나타냈지만 유의적 차이는 없다. 응집력은 저장기간이 증가할수록 낮아지고 샘플 간의 유의적 차이는 나타나지 않았다. 시차주사열량계로 측정한 결과, 건오디박 첨가량이 증가할수록 엔탈피가 감소하여 대조군에 비하여 노화도가 감소되어 오디박 첨가가 빵의 노화를 지연시키는 효과를 확인했다. 관능검사 결과 기호도에서 외관의 색, 맛, 향은 3% 건오디박 첨가군이 가장 높았다. 조직감은 0일에는 대조군이 가장 높았고 5일부터는 3% 건오디박 첨가군이 가장 높았다. 전반적인 기호도와 구입의사는 저장 0, 1, 3일에 1% 건오디박 첨가군이 가장 높았고 저장 5, 7일에는 3% 건오디박 첨가군이 가장 높았다. 강도검사 결과 건오디박을 첨가할수록 색과 오디향, 오디맛의 강도가 높게 나타났으며, 이와 반대로 조직감의 강도는 건오디박의 첨가량이 증가할수록 낮아지는 것을 볼 수 있다. 이상의 연구를 통해 모닝빵 제조 시 건오디박의 첨가는 수분 보지력을 높여 수분함량 변화를 최소화하고, 조직이 변화되는 것을 막아 경도에서 단단함을 보완하는 것이 가능한 것으로 보인다. 또한 관능검사에서 가장 기호도가 높았던 건오디박 3% 첨가군이 가장 바람직한 제조방법으로 사료된다.

Keywords

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