Prediction of Consumer Acceptance of Oriental Melon based on Physicochemical and Sensory Characteristics
2017
Lee, D.U., Korea Food Research Institute, Gyeonggi-do, Republic of Korea | Bae, J.M., Korea Food Research Institute, Gyeonggi-do, Republic of Korea | Lim, J.H., Korea Food Research Institute, Gyeonggi-do, Republic of Korea | Choi, J.H., Korea Food Research Institute, Gyeonggi-do, Republic of Korea
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 (r² ) 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.
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