Journal of Bio-Environment Control (생물환경조절학회지)

The Korean Society for Bio-Environment Control (한국생물환경조절학회)
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Effects of Carbon Dioxide Fertilization on the Quality and Storability of Strawberry 'Maehyang'

재배 시 탄산시비가 딸기 '매향' 의 품질과 저장성에 미치는 영향

  • Choi, In-Lee (Division of Horticulture and Systems Engineering, Program of Horticulture, Kangwon National University) ;
  • Yoon, Jae Su (Division of Horticulture and Systems Engineering, Program of Horticulture, Kangwon National University) ;
  • Yoon, Hyuk Sung (Division of Horticulture and Systems Engineering, Program of Horticulture, Kangwon National University) ;
  • Choi, Ki-Young (Department of Controlled Agriculture, Kangwon National University) ;
  • Kim, Il-Seop (Division of Horticulture and Systems Engineering, Program of Horticulture, Kangwon National University) ;
  • Kang, Ho-Min (Division of Horticulture and Systems Engineering, Program of Horticulture, Kangwon National University)
  • 최인이 (강원대학교 원예.시스템공학부 원예과학전공) ;
  • 윤재수 (강원대학교 원예.시스템공학부 원예과학전공) ;
  • 윤혁성 (강원대학교 원예.시스템공학부 원예과학전공) ;
  • 최기영 (강원대학교 시설농업학과) ;
  • 김일섭 (강원대학교 원예.시스템공학부 원예과학전공) ;
  • 강호민 (강원대학교 원예.시스템공학부 원예과학전공)
  • Received : 2017.01.12
  • Accepted : 2017.04.26
  • Published : 2017.04.30
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Abstract

This study was conducted to find out the effects of $CO_2$ fertilization (1,000ppm) on the quality and storability of 'Maehyang' strawberry fruits. Qualities such as firmness, soluble solid, and acidity of strawberry fruits showed higher numbers in those treated with $CO_2$ fertilization compared to those after harvest. Strawberry fruits were stored at $8^{\circ}C$; MA condition using $20,000cc{\cdot}m^{-2}{\cdot}day^{-1}{\cdot}atm^{-1}$ OTR (oxygen transmission rate) films and conventional condition using unsealed PE box stored for 20 and 10 days, respectively. Fresh weight loss rate was less than 1.0% in MA storage regardless of $CO_2$ fertilization treatment. Concentrations of oxygen, carbon dioxide, and ethylene in OTR films did not show any significant difference between $CO_2$ fertilization treatment and control (nontreatment) during storage. $CO_2$ fertilization treatments maintained higher firmness after storage regardless of storage methods, but soluble solid, acidity, and surface color did not differ among the treatments. Visual quality and off-flavor based on sensory evaluation was the highest in $CO_2$ fertilization treated strawberry and stored at a MA condition, and was the lowest in $CO_2$ fertilization treated strawberry and those stored in a conventional condition, respectively. The fungal incidence rate of strawberry fruits showed less in $CO_2$ fertilization treatment than control during both MA and conventional storage. These results suggest that $CO_2$ fertilization can improve firmness, increase visual quality after harvest and storage at $8^{\circ}C$, and the MA storage method enhances the shelf-life of 'Maehyang' strawberry fruits.

'매향' 딸기의 재배 시 1,000ppm 농도의 탄산시비가 품질과 저장성에 미치는 영향을 알아보고자 본 연구를 수행하였다. 딸기 수확 후 품질을 비교 하였는데, 경도, 당도, 그리고 산도가 무처리구에 비해 탄산가스 처리구에서 높은 수치를 나타내었다. 기존 유통조건인 관행저장 처리구는 10일간, 20,000cc OTR 필름으로 MA저장 처리구는 20일간 $8^{\circ}C$에서 저장하였다. 저장 중 생체중 감소율은 탄산시비 처리에 관계없이 MA저장 처리구가 저장종료일까지 1%의 낮은 감소를 보였다. 저장 중 MA저장 처리구의 포장내 산소, 이산화탄소, 그리고 에틸렌가스 농도는 탄산시비 처리에 따른 유의성있는 차이를 보이지 않았다. 저장종료일의 경도는 저장방법에 관계없이 탄산시비 처리구가 무처리구보다 높은 수치를 나타내었으나, 당도와 산도 그리고 과색은 처리에 따른 차이가 나타나지 않았다. 패널테스트를 통한 외관은 탄산시비 처리하여 MA저장한 처리구가 가장 우수하였으며, 이취는 탄산시비 처리하여 관행저장한 처리구가 가장 낮았다. 곰팡이 발생률은 두 저장방법 모두 무처리구에 비해 탄산시비 처리구가 낮은 수치를 보였다. 이상의 결과를 볼 때, 재배 중 탄산시비는 '매향' 딸기의 경도를 높여 $8^{\circ}C$ 저장 중 외관상 품질과 저장 후 경도를 높게 유지시켜 저장성을 향상시킬 수 있으며, 저장방법으로는 MA저장이 저장기간을 연장시킬 것으로 판단된다.

Keywords

References

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