Food Science and Preservation (한국식품저장유통학회지)

The Korean Society of Food Preservation (한국식품저장유통학회)
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Quality changes and factors in Valencia oranges during storage under different temperatures

Valencia 오렌지의 저장온도에 따른 품질 변화 및 지표성분 확인

  • Jo, Yunhee (School of Food Science and Biotechnology, Kyungpook National University) ;
  • Chung, Namhyeok (School of Food Science and Biotechnology, Kyungpook National University) ;
  • Gao, Yaping (School of Food Science and Biotechnology, Kyungpook National University) ;
  • Kwon, Joong-Ho (School of Food Science and Biotechnology, Kyungpook National University)
  • Received : 2015.06.15
  • Accepted : 2015.09.30
  • Published : 2015.10.30
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Abstract

The effect of temperature on the quality and characteristics of Valencia oranges were studied during storage at low ($4^{\circ}C$, LT) and room ($20^{\circ}C$, RT) temperature. Hardness decreased beginning on the 10th day of storage, regardless of temperature, and showed a more considerable reduction in the peel than the flesh. The total soluble solids (TSS) and titratable acidity (TA) decreased from the 30th day at LT and the 10th day at RT, but the TSS/TA ratio did not change during storage. The vitamin C content decreased from the 20th day at LT and the 10th day at RT, and the total phenol content decreased from the 10th day of storage. In a sensory evaluation, the scores changed less for taste than for color and flavor during storage. The quality of Valencia oranges under two different temperatures was similar on the 30th day at LT and on the 10th day at RT. The TSS (r = 0.9453) and vitamin C content (r = 0.9104) were highly related to sensory properties. These results suggested that TSS and vitamin C are potential indicators of quality for the selection of Valencia oranges during storage.

수입 오렌지 중 Valencia 품종의 신선도 유지기간에 대한 기초자료를 확보하고자, 저온($4^{\circ}C$) 및 상온($20^{\circ}C$)의 저장온도가 오렌지의 품질 특성에 미치는 영향을 평가하고 이와 관련된 품질인자를 확인하였다. 오렌지의 경도는 저장 10일부터 저장온도에 상관없이 감소하였으며, 과육보다 껍질에서 큰 폭으로 확인되었다. 가용성 고형분 함량과 적정산도는 저온저장의 경우 30일에, 상온저장의 경우 10일부터 유의적으로 감소하였고, 당/산비는 저장 중 차이를 보이지 않았다. 비타민 C 함량은 저온저장 20일 및 상온저장 10일부터 각각 유의적으로 감소하였고, 총 페놀함량은 저장 10일부터 감소하였다. 맛에 대한 관능평점은 색과 향의 평점에 비해 저장기간에 따른 영향이 작았으며, Valencia 오렌지의 경우 저온저장 30일째의 품질이 상온저장 10일째와 유사한 것으로 확인되었다. 저장 중 이화학적 특성과 전반적 기호도 간의 상관관계를 분석한 결과, 가용성 고형분과 비타민 C 함량은 0.9 이상의 높은 상관계수를 나타내어 저온 및 상온 유통 중인 Valencia 오렌지의 선택을 위한 주요 품질인자로 제시될 수 있었다.

Keywords

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