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자료유형
학술저널
저자정보
저널정보
한국원예학회 HORTICULTURE ENVIRONMENT and BIOTECHNOLOGY HORTICULTURE ENVIRONMENT and BIOTECHNOLOGY Vol.50 No.2
발행연도
2009.4
수록면
132 - 138 (7page)

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The quality of harvested perishable products greatly depends on temperatures during transport and storage or market display. In this study, we evaluated the influence of low temperature and duration of storage on the storage quality in iceberg lettuce that were kept at 1±0.2℃ for 0 (control), 1 and 2 weeks and subsequently exposed to 20±2℃ for 10 days. Lettuce heads with prior storage at 1℃ for 1 or 2 weeks showed higher visual quality and lower level of wilting as compared to the control sample until 4 days of storage at 20℃. However, higher butt discoloration ratings were observed for 1 or 2-week stored samples. Higher hue angle value was observed in the 1-week sample until 4 days of storage as compared to the control or 2-week samples. No significant difference in textural quality was found between the control and 1℃ stored samples. In general, 1-week sample exhibited slightly higher puncture force and breaking energy value as compared with the control and 2-week samples. At the end of the storage, soluble sugar content declined by 52, 45 and 54% in the outer leaves and 70, 62 and 65% in the inner leaves of the control, 1 and 2-week stored samples, respectively. The heads with prior storage at 1℃ for 1 week showed a little higher sugar contents than those with 2-week or the control samples. In general, the outer leaves contained higher amount of sucrose, whereas the inner leaves contained higher amount of glucose and fructose. Although citric acid was found in trace amount, malic acid was the main component in organic acid fractions. Results suggest that iceberg lettuce could be stored at 1℃ for 2 weeks without affecting quality and that a better quality could be maintained at 20℃ with prior storage at 1℃ than continuous storage at 20℃.

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Abstract
Introduction
Materials and Methods
Results and Discussion
Acknowledgement
Literature Cited

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UCI(KEPA) : I410-ECN-0101-2009-525-018296492