감자 변성 전분 배합 비율에 따른 현미다식의 품질 특성

Quality Characteristics of Brown Rice Dasik using Modified Potato Starch

  • 투고 : 2010.02.24
  • 심사 : 2010.03.18
  • 발행 : 2010.03.30

초록

다식을 세계화시킬 목적으로 기능성 요소를 고루 갖추고 있는 현미에 식감과 기호도 향상을 위해 감자 변성 전분을 배합하여 품질 특성을 개선하고자 한 연구결과의 요약은 다음과 같다. 감자 변성 전분을 현미분말의 0, 25, 50, 75, 100% 수준으로 배합하여 제조한 다식의 일반성분 측정 결과 수분 함량은 유의차는 없었지만 감자 변성 전분 배합 비율이 증가할수록 증가하는 경향을 보였고, 회분, 단백질 및 지방 함량은 감자변성 전분 함량이 증가할수록 유의적으로 감소하였다. 감자 변성 전분 배합 비율이 증가할수록 밝기를 나타내는 명도(L값)는 유의적으로 증가하였다(p<0.001). 적색도를 나타내는 a값은 감자 변성 전분 배합비가 높아질수록 낮아지는 경향을 나타내었으며, 특히 감자 변성 전분 100%에서 -0.40으로 유의적(p<0.001)으로 가장 낮게 나타났다. 황색도를 나타내는 b값은 감자 변성 전분 배합량이 증가할수록 유의적으로 낮아지는 것으로 나타났다(p<0.001). 물성 측정 결과, 경도(hardness), 검성(gumminess) 및 씹힘성(chewiness) 모두 감자 변성 전분의 첨가량이 증가할수록 유의적으로 증가하였다. 관능 평가 결과, 색(color)은 감자 호화전분 배합 비율이 50% 수준에서 가장 좋은 평가가 나타났고, 그 이상의 비율인 50, 75, 100%로 배합 시에는 대조군에 비해 유사하거나 낮은 평가가 나타났다. 단맛(sweetness)의 경우 감자 변성 전분 25% 배합군(BM1)에서 유의적으로 높게 평가되었으며, 입안에서의 감촉(mouthfeel)은 50% 배합군(BM2)에서 유의적으로 가장 높았으며, 감자 변성 전분을 75% 이상 첨가한 경우는 낮아지는 것으로 나타났다. 씹힘성(chewiness)과 전반적인 기호도(overall-quality)에 있어서도 유의적으로 감자 변성 전분 50% 배합군(BM2)이 가장 높게 평가되어 현미다식에 감자 변성 전분 배합 50%가 바람직할 것으로 판단된다.

The principal objective of this study was to evaluate the physicochemical characteristics of brown rice Dasik prepared with different 5 levels(0, 25, 50, 75, 100%) of modified potato starch powder. We assessed the general compositions, Hunter's color values, the mechanical characteristics, and conducted a sensory evaluation analysis of brown rice Dasik at room temperature($20^{\circ}C$). The more modified potato starch powder composition was increased, the content of ash, protein and fat were significantly decreased(p<0.05). We noted that the luminance of samples were increased the more modified potato starch powder composition was increased, but in Hunter's a and b values were decreased. With regard to the mechanical properties of the Dasik samples, we noted significant differences in hardness, gumminess, chewiness but no differences in springiness, cohesiveness and adhesiveness were detected. The more modified potato starch powder composition was increased, the more the score of hardness, gumminess and chewiness were higher. The results of sensory evaluation showed that there were significant differences on the color, sweetness, mouth-feel, chewiness, overall quality of the Dasik samples(p<0.05). The score of brown rice Dasik with 50%(w/w) modified potato starch(BM2) in color, mouth-feel, chewiness, overall quality were significantly increased than those of other samples.

키워드

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