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Effect of different days of postharvest treatment and CO2 concentrations on the quality of 'Seolhyang' strawberry during storage

수확 후 CO2 처리 시기 및 농도에 따른 '설향' 딸기 저장 중 품질변화

  • Kim, Ji-Gang (Postharvest Research Team, National Institute of Horticultural and Herbal Science) ;
  • Choi, Ji-Woen (Postharvest Research Team, National Institute of Horticultural and Herbal Science) ;
  • Park, Me-Hea (Postharvest Research Team, National Institute of Horticultural and Herbal Science)
  • 김지강 (국립원예특작과학원 저장유통연구팀) ;
  • 최지원 (국립원예특작과학원 저장유통연구팀) ;
  • 박미희 (국립원예특작과학원 저장유통연구팀)
  • Received : 2015.09.21
  • Accepted : 2016.01.05
  • Published : 2016.02.28

Abstract

This study was conducted to determine $CO_2$ treatment condition to extend the shelf-life of 'Seolhyang' strawberry. Fresh strawberries with red color on 80% of the fruit surface were harvested. The samples at two different stages (on the $1^{st}$ and $3^{rd}$ day after harvest) were placed in a gas-tight chamber with 0, 5, 15, or 30% $CO_2$ concentration for 3 hours at $4^{\circ}C$. Then, the strawberry samples were immediately packaged in a PET tray and stored at $4^{\circ}C$. The carbon dioxide treatment was effective in maintaining the quality of 'Seolhyang' strawberries treated on the $1^{st}$ day after harvest. These samples had higher firmness, lower redness, softening index, and decay rate compared to samples treated on the $3^{rd}$ day after harvest. Treatment with both 15 and 30% of $CO_2$ concentration on the $1^{st}$ day after harvest induced an increase of firmness of 'Seolhyang' strawberry after the treatment. Samples treated with 15 and 30% $CO_2$ the $1^{st}$ day after harvest maintained quality for 10 days. However, samples treated with $CO_2$ on the $3^{rd}$ day after harvest lost marketability at 10 days of storage. At the atmosphere containing 30% $CO_2$ on the $1^{st}$ day after harvest was most effective in reducing decay rate and fruit softening, and maintaining bright red color of strawberries among different $CO_2$ concentrations. Therefore, a 30% $CO_2$ treatment within one day after harvest can be a practical postharvest technology to extend shelf-life of 'Seolhyang' strawberry.

Acknowledgement

Supported by : 농촌진흥청

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