Food Science and Preservation (한국식품저장유통학회지)

The Korean Society of Food Preservation (한국식품저장유통학회)
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Effectiveness of controlled atmosphere container on the freshness of exported PMRsupia melon

CA 컨테이너를 이용한 수출 멜론의 선도유지 효과

  • Haejo Yang (Postharvest Research Division, National Institute of Horticultural & Herbal Science) ;
  • Min-Sun Chang (Postharvest Research Division, National Institute of Horticultural & Herbal Science) ;
  • Puehee Park (Postharvest Research Division, National Institute of Horticultural & Herbal Science) ;
  • Hyang Lan Eum (Postharvest Research Division, National Institute of Horticultural & Herbal Science) ;
  • Jae-Han Cho (Postharvest Research Division, National Institute of Horticultural & Herbal Science) ;
  • Ji Weon Choi (Postharvest Research Division, National Institute of Horticultural & Herbal Science) ;
  • Sooyeon Lim (Postharvest Research Division, National Institute of Horticultural & Herbal Science) ;
  • Yeo Eun Yun (Postharvest Research Division, National Institute of Horticultural & Herbal Science) ;
  • Han Ryul Choi (Postharvest Research Division, National Institute of Horticultural & Herbal Science) ;
  • Me-Hea Park (Postharvest Research Division, National Institute of Horticultural & Herbal Science) ;
  • Yoonpyo Hong (Postharvest Research Division, National Institute of Horticultural & Herbal Science) ;
  • Ji Hyun Lee (Postharvest Research Division, National Institute of Horticultural & Herbal Science)
  • 양해조 (농촌진흥청 국립원예특작과학원 저장유통과) ;
  • 장민선 (농촌진흥청 국립원예특작과학원 저장유통과) ;
  • 박부희 (농촌진흥청 국립원예특작과학원 저장유통과) ;
  • 엄향란 (농촌진흥청 국립원예특작과학원 저장유통과) ;
  • 조재한 (농촌진흥청 국립원예특작과학원 저장유통과) ;
  • 최지원 (농촌진흥청 국립원예특작과학원 저장유통과) ;
  • 임수연 (농촌진흥청 국립원예특작과학원 저장유통과) ;
  • 윤여은 (농촌진흥청 국립원예특작과학원 저장유통과) ;
  • 최한률 (농촌진흥청 국립원예특작과학원 저장유통과) ;
  • 박미희 (농촌진흥청 국립원예특작과학원 저장유통과) ;
  • 홍윤표 (농촌진흥청 국립원예특작과학원 저장유통과) ;
  • 이지현 (농촌진흥청 국립원예특작과학원 저장유통과)
  • Received : 2023.10.05
  • Accepted : 2023.10.12
  • Published : 2023.10.30
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Abstract

This study investigates the effectiveness of CA (controlled atmosphere) containers in maintaining the freshness of exported melons. The melons were harvested on June 5, 2023, in the Yeongam area of Jeollanam-do, Korea. The CA container was loaded with melon samples packed in an export box. The temperature inside the container was set at 4℃, while the gas composition was set at 5% oxygen, 12% carbon dioxide, and 83% nintrogen. Following two weeks of simulated transportation, quality analysis was conducted at 10℃. The melons were inoculated with spore suspensions, and the decay rate was determined to investigate the effect of the gas composition inside the CA container on suppressing the occurrence of Penicillium oxalicum in melons. The results were compared with a Reefer container set at the same temperature. The samples transported in the CA container exhibited lower weight loss. The melon pulp softening, respiration rate, and ethylene production were slower using the CA container. Moreover, the decay rate during the distribution period in the CA container was lower than in the Reefer container. In contrast, the firmness of melons transported in the Reefer container decreased significantly (from 9.03N to 5.18N) immediately after transportation. The soluble solid content (SSC) of melons transported in the Reefer container also decreased rapidly. The results suggested that the CA container is the optimal export container for maintaining the freshness of melons.

본 연구에서는 수출 멜론의 선도유지를 위하여 컨테이너 종류별 모의 수송 후 저장기간 동안의 품질변화를 분석하여 CA 컨테이너의 효과를 구명하고자 수행하였다. 멜론은 전남 영암군에서 재배된 멜론을 수확 후, Reefer 컨테이너와 CA 컨테이너로 나눠 수송하였고, CA 컨테이너의 환경조건은 온도 4℃, O2 5%, CO2 12%, Reefer 컨테이너는 4℃로 설정하였다. 2주간의 모의 수송이 끝난 후 수출대상국 현지에서의 판매 조건인 10℃에 저장하면서 생체중 감소율, 가용성 고형물 함량, 경도, 색도, 호흡률, 에틸렌 발생량 및 부패율 등을 조사하였다. 또한, CA 컨테이너 환경조건이 멜론에서 발생하는 Penicillium oxalicum 균의 억제 효과를 구명하기 위해 포자현탁액을 접종하여 부패 억제 효과를 분석하였다. 생체중 감소율은 수송 2주 후 0, 3, 6일 차에는 통계적으로 유의한 차이는 보이지 않았지만, 9일차에 CA 컨테이너 처리구의 중량감소가 적었다. 경도는 Reefer 컨테이너 처리구가 모의 수송 직후 5.18N으로 급격하게 낮아졌으며 유통기간 동안 CA 컨테이너 처리구의 경도가 높게 유지되었다. 가용성 고형물 함량은 Reefer 컨테이너 처리구에서 모의 수송 직후인 0일차에 10.9 °brix로 CA 컨테이너 처리구보다 높게 나타난 후 이후부터는 꾸준하게 감소하였지만, CA 컨테이너 처리구는 모의 수송 및 저장기간 중 큰 변화는 없었다. 과육의 색 변화 정도를 나타내는 ΔE는 Reefer 컨테이너 처리구가 수송 후 저장기간이 길어질수록 증가하였고, CA 컨테이너 처리구는 Reefer 컨테이너 처리구보다 낮게 유지되었다. 부패율은 미생물을 접종하지 않은 시험 처리구에서 Reefer 컨테이너는 20%, CA 컨테이너에서는 5% 정도 부패가 발생하였고, 미생물을 접종한 시험 처리구에서는 Reefer 컨테이너는 100%, CA 컨테이너에서는 75% 정도 부패가 발생하였다. 따라서 멜론은 수확후 CA 컨테이너로 수송하여 유통 또는 저장하는 것이 품질 및 선도유지에 효과적이라 판단된다.

Keywords

Acknowledgement

This research was funded by the "Research Program for Agriculture Science and Technology Development (Project No. RS-2022-RD010414) and 2023 the RDA Fellowship Program of NIHHS, Rural Development Administration, Republic of Korea.

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