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Effect of Plastic Container Vent Ratio on Strawberry Quality during Precooling and Storage  

Lee, Ho-Joon (Korea Food Research Institute)
Seo, Jeong-Ah (Korea Food Research Institute)
Choi, Jeong-Hee (Korea Food Research Institute)
Lee, Kang-Dae (Yonsei University)
Jeong, Moon-Cheol (Korea Food Research Institute)
Publication Information
Food Science and Preservation / v.17, no.5, 2010 , pp. 581-585 More about this Journal
Abstract
The effects of plastic container vent ratio on fruit quality during strawberry precooling and storage were analyzed. Plastic containers ($520mm{\times}355mm{\times}182mm$) were manufactured with bottom and side vents at areal ratios of 5%, 10%, 15% and 20%. Fruit was loaded at a volume ratio of 80% prior to pressure cooling and storage at $5^{\circ}C$. The internal fruit temperature was $18^{\circ}C$ and the times taken to attain $2^{\circ}C$ after precooling were 1 hour 9 minutes, 1 hour 13 minutes, 2 hours 2 minutes, and 2 hours 51 minutes at vent ratios of 20%, 15%, 10%, and 5%, respectively. To mimic the current distribution system, precooled strawberries were packaged in tray wrapping and stored at $5^{\circ}C$. Changes in weight, bruising, extent of decay, and firmness, were measured. Weight loss, bruising, and decay were highest at a vent ratio of 20%, lowest at a vent ratio of 15%, and moderate at vent ratios of 5% and 10%. No significant among-treatment difference in fruit firmness was evident.
Keywords
vent ratio; plastic container; strawberry; precooling;
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