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Quality Characteristics of Tomato Jam Added with Fructo-oligosaccharide

프락토 올리고당을 첨가한 토마토잼의 품질특성

  • Na, Yeon-Mi (Dept. of Food & Nutrition, Sunchon National University) ;
  • Lee, Young-Ju (Dept. of Marine Food Science & Technology, Chonnam National University) ;
  • Chun, Soon-Sil (Dept. of Food & Nutrition, Sunchon National University)
  • 나연미 (순천대학교 식품영양학과) ;
  • 이영주 (전남대학교 해양식품공학) ;
  • 전순실 (순천대학교 식품영양학과)
  • Received : 2011.10.07
  • Accepted : 2012.01.07
  • Published : 2012.02.29

Abstract

Quality characteristics of tomato jam added with 15, 25, 35 and 50% fructo-oligosaccharide substituted for sucrose were evaluated. As the amount of fructo-oligosaccharide increased, the moisture content and total titratable acidity of tomato jam increased, whereas pH and spreadness decreased. In the results of color and texture analysis, lightness ($L^*$), redness ($a^*$) and yellowness ($b^*$) in addition to adhesiveness and resilience increased when fructo-oligosaccharide was added up to 50% of the total tomato weight. In the sensory evaluation, values of flavor, transparency, sweetness, and off-flavor decreased as fructo-oligosaccharide content increased, whereas tomato flavor, sourness and stickiness increased. Overall acceptance of tomato jam added with 25~35% fructo-oligosaccharide was the highest among all of the samples.

본 연구에서는 설탕의 역기능을 줄이고 프락토올리고당의 순기능을 이용한 건강 지향형 잼을 개발하고자 프락토올리고당을 첨가한 토마토잼을 제조하여 품질 특성을 조사하였다. 수분함량은 프락토올리고당 첨가량이 증가할수록 증가하였으며, 당도와 pH는 프락토올리고당 첨가량이 증가함에 따라 감소하는 것으로 나타났다. 총산도는 프락토올리고당 첨가량이 증가할수록 유의적으로 증가하였다(p<0.05). 색도의 명도($L^*$)는 프락토올리고당 첨가량이 증가할수록 증가하였고, 적색도($a^*$)는 프락토올리고당 첨가량 증가에 따라 $a^*$가 유의적으로 상승하였으며, 황색도($b^*$)는 프락토올리고당 첨가량이 증가할수록 $b^*$가 증가하였다. 퍼짐성은 프락토올리고당의 첨가량이 증가함에 따라 퍼짐성이 감소하는 것으로 나타났다. 조직감에서 견고성은 프락토올리고당 첨가량이 증가함에 따라 첨가군 간의 유의적 차이를 보였으며, 부착성과 복원성은 프락토올리고당 첨가량이 증가함에 따라 증가하였다. 소비자 기호도 평가에서 특성강도는 토마토향과 신맛은 프락토올리고당 첨가량 증가에 따라 증가하는 것으로 나타났으며, 단맛은 프락토올리고당 첨가량이 증가할수록 감소하는 것으로 나타났다. 끈적이는 정도는 대조군과 첨가군들 간에 큰 변화를 보이지 않았다. 부적합한 향미는 프락토올리고당 첨가량이 증가할수록 높게 나타났다. 색은 프락토올리고당 첨가량이 증가해도 큰 차이를 보이지 않는 것으로 나타났다. 향미는 프락토올리고당 첨가량이 증가할수록 감소하였으며, 투명한 정도는 프락토올리고당 첨가량이 증가할수록 잼의 투명한 정도를 떨어뜨리는 것으로 나타났다. 관능검사는 프락토올리고당 25%~35% 첨가한 잼이 전반적으로 높은 기호도를 나타내었다.

Keywords

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