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

The Korean Society of Food Science and Nutrition (한국식품영양과학회)
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Quality Characteristics of Jelly Incorporated with Sweet Pumpkin Powder

단호박 분말을 첨가한 젤리의 품질특성

  • Lee, Jun Ho (Dept. of Food Science and Engineering, Daegu University) ;
  • Lee, Myung Kyung (Dept. of Food Science and Engineering, Daegu University)
  • Received : 2012.10.11
  • Accepted : 2012.12.11
  • Published : 2013.01.31
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Abstract

The feasibility of incorporating sweet pumpkin powder as a value-added food ingredient, using a model food system of jelly, was investigated. Sweet pumpkin powder was incorporated into jelly at 0, 2, 4, 6, and 8% (w/w) levels. Qualities, such as moisture content, pH, soluble solids content, color, hardness, and consumer preferences were determined. The moisture content of jelly decreased, but pH and soluble solids content increased significantly with increasing levels of sweet pumpkin powder (p<0.05). Lightness decreased but redness and yellowness increased significantly (p<0.05). Hardness also increased significantly with higher amounts of sweet pumpkin powder in the formulation (p<0.05). Finally, the consumer acceptance test indicated that the highest level of incorporation (8%, w/w) had a considerable adverse effect on consumer preferences in all attributes. The jellies with 2% sweet pumpkin powder are recommended (with respect to overall preference score) for taking advantage of the functional properties of sweet pumpkin powder without sacrificing consumer acceptability.

본 연구에서는 단호박 분말의 첨가량을 달리하여 젤리를 제조한 후 젤리의 물리화학적 품질특성(수분함량, pH, 가용성 고형분, 색도, 외관색상, 경도)과 소비자 기호도(색, 향미, 씹힘성, 맛, 전체적 기호도)를 비교 분석하였다. 젤리의 수분함량은 단호박 분말 첨가량이 증가할수록 유의적으로 감소하였으며, pH와 가용성 고형분 함량은 증가하였다(p<0.05). 명도를 나타내는 $L^*$값은 단호박 분말의 첨가량이 증가할수록 유의적으로 감소하였고(p<0.05), 적색도를 나타내는 $a^*$값과 황색도를 나타내는 $b^*$값은 유의적으로 증가하였다(p<0.05). 젤리의 경도 또한 유의적으로 증가하였다(p<0.05). 소비자 검사결과 2% 첨가군이 모든 평가항목에서 유의적으로 높은 평가를 받아 젤리의 관능적 품질을 최대한 유지하면서 단호박 분말의 기능적 이점을 최대한 활용하기 위한 최적 첨가 농도는 2%가 가장 적합한 것으로 판단된다.

Keywords

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