Horticultural Science & Technology (원예과학기술지)

Korean Society of Horticultural Science (한국원예학회)
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Prediction of Consumer Acceptance of Oriental Melon based on Physicochemical and Sensory Characteristics

이화학적·관능적 품질 특성에 기반한 참외의 소비자 기호도 예측

  • Received : 2016.09.09
  • Accepted : 2016.11.17
  • Published : 2017.08.28
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Abstract

We investigated the physicochemical and sensory characteristics of oriental melon (Cucumis melo L.) to provide a consumer-oriented quality index. Oriental melon fruits were harvested at 20, 25, or 30 days after fruit set (DAFS), and each group was sorted by size (small, medium, and large). Fruits harvested at 25 and 30 DAFS had higher CIE $a^*$ and $b^*$ values, higher soluble solids content (SSC), and lower CIE $L^*$, firmness, and titratable acidity (TA) values than fruits harvested at 20 DAFS. Fruits harvested at 25 and 30 DAFS scored more highly for overall acceptance. A significant correlation was found between physicochemical characteristics and overall acceptance. In the delayed-harvest sample, increased sweetness and yellowness, and decreased sensorial texture were associated with an increase in overall acceptance. In principal component analysis, F1 and F2 explained 62.16% and 17.91% of the total variance (80.07%), respectively. Regression analysis of overall acceptance and F1 gave a coefficient of determination ($r^2$) of 0.87. Our results show that consideration of the physicochemical characteristics (CIE value, SSC, pH, SSC/TA ratio, and firmness) and sensory characteristics (yellowness, placenta area condition, oriental melon odor, sweetness, oriental melon flavor, texture, and off odor) of oriental melon in this way can be used as quality indices to predict consumer acceptance.

본 연구는 참외의 소비자 기반 품질 지표를 제공하기 위하여 이화학적 특성 및 관능 특성을 조사하였다. 참외는 착과 후 20일, 25일, 그리고 30일에 수확하였으며, 각 수확 시기에 따라 부피별로 소, 중, 대를 구분하여 총 9그룹의 특성을 분석하였다. 착과 후 25일 및 30일에 수확된 그룹은 20일에 수확된 그룹에 비하여 CIE $a^*$와 $b^*$값, 그리고 가용성 고형분 함량(SSC)이 높았으며, CIE $L^*$값과 경도는 낮았다. 또한 착과 후 25일 및 30일에 수확된 그룹은 전반적인 기호도가 높았다. 특성간 상관성 분석결과 이화학적 특성(CIE 값, SSC, 산도, 그리고 경도)과 전반적인 기호도는 1% 유의수준에서 상관성이 있었다. 관능 특성 평가결과 수확 시기가 늦을수록 당도와 황색도는 높고 경도는 낮았으며, 이러한 특성은 전반적인 기호도의 증가와 연관이 있었다. 주성분 분석결과 제 1주성분과 제 2주성분은 각각 62.16%와 17.91%의 설명력을 보여주었으며 전체 설명력은 80.07%였다. 제 1주성분 점수의 변화 경향을 활용하여 전반적인 기호도와 직선회귀식을 산출한 결과 $r^2$은 0.87이었다. 본 실험결과 이화학적 특성인 CIE 값과 SSC, pH, SSC/적정 산도(TA) 및 경도와 관능적 품질 특성인 과피의 황색도, 향, 풍미, 단맛, 조직감, 이미, 그리고 태좌부의 상태를 참외의 품질지표로 활용하여 소비자 기호도 예측이 가능하였다.

Keywords

References

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