Food Engineering Progress (산업식품공학)

Korean Society for Industrial Food Engineering (한국산업식품공학회)
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Effect of Pallet Size Modified Atmosphere Packaging Using Polyamide Film and Linear Low Density Polyethylene Film on the Shelf Life of Strawberries

PA와 LLDPE 필름을 이용한 딸기 저장용 Modified Atmosphere Pallet Packaging 연구

  • Kim, Jinse (Department of Agricultural Engineering, National Institute of Agricultural Sciences, RDA) ;
  • Jung, Hyun Kyung (Department of Agricultural Engineering, National Institute of Agricultural Sciences, RDA) ;
  • Nam, So Young (Department of Agricultural Engineering, National Institute of Agricultural Sciences, RDA) ;
  • Son, Jae Yong (Department of Agricultural Engineering, National Institute of Agricultural Sciences, RDA) ;
  • Park, Seok Ho (Department of Agricultural Engineering, National Institute of Agricultural Sciences, RDA) ;
  • Choi, Dong Soo (Department of Agricultural Engineering, National Institute of Agricultural Sciences, RDA) ;
  • Kim, Yong Hoon (Department of Agricultural Engineering, National Institute of Agricultural Sciences, RDA) ;
  • Lee, Soo Jang (Department of Agricultural Engineering, National Institute of Agricultural Sciences, RDA) ;
  • Park, Chun Wan (Department of Agricultural Engineering, National Institute of Agricultural Sciences, RDA)
  • 김진세 (농촌진흥청 국립농업과학원 농업공학부) ;
  • 정현경 (농촌진흥청 국립농업과학원 농업공학부) ;
  • 남소영 (농촌진흥청 국립농업과학원 농업공학부) ;
  • 손재용 (농촌진흥청 국립농업과학원 농업공학부) ;
  • 박석호 (농촌진흥청 국립농업과학원 농업공학부) ;
  • 최동수 (농촌진흥청 국립농업과학원 농업공학부) ;
  • 김용훈 (농촌진흥청 국립농업과학원 농업공학부) ;
  • 이수장 (농촌진흥청 국립농업과학원 농업공학부) ;
  • 박천완 (농촌진흥청 국립농업과학원 농업공학부)
  • 투고 : 2019.01.08
  • 심사 : 2019.02.15
  • 발행 : 2019.02.28
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초록

For the vessel export of strawberries, modified atmosphere package (MAP) using polyamide (PA) film and linear low density polyethylene (LLDPE) film was investigated to extend the shelf life of strawberries. Because the temperature and relative humidity changes of the MAP were lower than the changes of the control, the weight loss of the MAP were lower than that of the control. The low oxygen level and high carbon dioxide level were effective to decrease the fungal decay rate and to increase the hardness of strawberries. The Hunter's color differences before and after storage showed no distinct difference between the MAP and the control. The lightness had a tendency to decrease while the redness increased. There were no significant changes of the soluble solids during the storage. The shelf life of strawberries could be extended to 16 days using the MAP considering the weight loss and the fungal decay rate. Thus, this MAP method using PA film and LLDPE film was effective to extend the shelf life of strawberries.

딸기에 대해 pallet 상부와 하부는 PA 필름으로, 측면은 LLDPE 필름으로 MAP 처리를 할 경우 포장 내부의 온습도 편차를 줄이며, 산소 농도 3-6%, 이산화탄소 농도 15-25%로 안정화하여 감모율이 향상되고, 곰팡이 발생률이 억제되는 것을 확인하였다. 경도향상과 이취를 고려하였을 때 적정 이산화탄소 농도는 15-20%이며, 이러한 높은 이산화탄소 농도는 경도를 21-40% 수준으로 높이는데 영향을 준것으로 판단된다. 대조구의 경우 60% 숙도 딸기의 경도가 80% 숙도에 비해 높았으나, MAP 처리구의 경우 12일차를 제외하고 60%와 80% 숙도의 경도는 통계적인 차이 없이 높은 수준으로 유지되었다. MAP 처리 시 80% 숙도는 60% 숙도에 비해 감모율, 곰팡이 및 경도 차이 없이 0.7-2.4 °Brix 높은 당도가 유지되었다. 따라서, pallet MAP를 사용할 경우 동남아시아 국가로 선박 수출하기 위한 14일 동안의 선도유지가 가능하고, 80% 이상의 높은 숙도로 딸기를 수출하여 품질 경쟁력도 향상시킬 수 있을 것으로 판단된다.

키워드

참고문헌

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