• Title/Summary/Keyword: 수확후

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Influence of Harvest Time after Freezing Damage on Fruit Quality during Storage of 'Fuji' Apples (동결피해 후의 수확시기가 사과 '후지' 품종의 저장 중 과실품질에 미치는 영향)

  • Kweon, Hun-Joong;Lee, Sang-Gyu;Park, Moo-Yong;Song, Yang-Yik;Nam, Jong-Chul;SaGong, Dong-Hoon
    • Horticultural Science & Technology
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    • v.28 no.6
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    • pp.990-995
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    • 2010

  • This study was conducted to compare differences in fruit quality by harvest time of 'Fuji' apple fruit that was frozen on tree by unusual low temperature in that air temperature was under $-3.5^{\circ}C$ for 7 hours. Fruits were harvested at 1 day before, and 2 days and 6 days after freezing damage, respectively. Harvest's soluble solid contents in all treatments was over $14^{\circ}Bx$. Firmness and titratable acidity of fruit harvested after freezing damage was lower than those of fruit harvested before freezing damage. During cold storage, ethylene production of fruit harvested after freezing damage was higher than that of fruit harvested before freezing damage. The reduction in the level of fruit quality during cold storage of fruit harvested after freezing damage was more serious than that of fruit harvested before freezing damage. The reduction of fruit quality during subsequent ambient temperature for 1 week after cold storage of fruit harvested after freezing damage was higher than that of fruit harvested before freezing damage. In comparison of treatments that were harvested at different times after freezing damage, ethylene production and reduction in the level of fruit quality until 8 weeks of cold storage of fruit harvested at 6 days after freezing damage was lower than that of fruit harvested at 2 days after freezing damage. However, this difference by harvest time after freezing damage disappeared after 8 weeks of cold storage. Incidence of flesh browning was not affected by freezing at air temperature under $-3.5^{\circ}C$ for 7 hours.

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