KOREAN JOURNAL OF PACKAGING SCIENCE & TECHNOLOGY (한국포장학회지)

Korea Society of Packaging Science and Technology (한국포장학회)
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Effect of Seasonal Distribution Temperature on Storability of Modified Atmosphere Packaged Baby Leaf Beet

계절별 수송 온도가 MA 포장한 어린잎 비트의 저장성에 미치는 영향

  • Choi, In-Lee (Division of Horticulture and Systems Engineering, Program of Horticulture, Kangwon National University) ;
  • Han, Su Jung (Division of Horticulture and Systems Engineering, Program of Horticulture, Kangwon National University) ;
  • Kim, Ju Young (Division of Horticulture and Systems Engineering, Program of Horticulture, Kangwon National University) ;
  • Ko, Young-Wook (Cheorwon Plasma Research Institute) ;
  • Kim, Yongduk (Cheorwon Plasma Research Institute) ;
  • Hwang, Myung-Keun (Cheorwon Plasma Research Institute) ;
  • Yu, Wanggun (GLVision Company Limited) ;
  • Kang, Ho-Min (Division of Horticulture and Systems Engineering, Program of Horticulture, Kangwon National University)
  • 최인이 (강원대학교 원예.시스템공학부 원예과학전공) ;
  • 한수정 (강원대학교 원예.시스템공학부 원예과학전공) ;
  • 김주영 (강원대학교 원예.시스템공학부 원예과학전공) ;
  • 고영욱 (철원플라즈마산업기술연구원) ;
  • 김용득 (철원플라즈마산업기술연구원) ;
  • 황명근 (철원플라즈마산업기술연구원) ;
  • 유왕건 ((주)지엘비젼) ;
  • 강호민 (강원대학교 원예.시스템공학부 원예과학전공)
  • Received : 2018.06.21
  • Accepted : 2018.08.28
  • Published : 2018.08.31
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Abstract

The effects of distribution temperature due to season all changes on quality and storability of baby leaf beet (Beta vulgaris L.) was examined in modified atmosphere (MA) packages. The beet leaf had been harvested at the 10 cm leaf length stage and packaged with an oxygen transmission rate (OTR) film of $1,300cc{\cdot}m^{-2}{\cdot}day^{-1}{\cdot}atm^{-1}$ and then held at 4 different distribution temperatures which were $-2^{\circ}C$, $4^{\circ}C$, $20^{\circ}C$, or $30^{\circ}C$ for 5 hrs and then stored for 18 days at $8^{\circ}C$. The loss of fresh weight of packged baby leaf beet was lowest at the $4^{\circ}C$ treatment, and below 0.6% in all distribution temperature treatments. The atmosphere composition in packages did not show any significant differences among treatments. The oxygen conc. was the highest at 18.0% after the $4^{\circ}C$ treatment, carbon dioxide conc. showed the maximum value of 4% at the $30^{\circ}C$ and $-2^{\circ}C$ treatments, and ethylene conc. was highest at the $10^{\circ}C$ treatment after 10 days in storage. The hardness was the highest at the $4^{\circ}C$ treatment on the final storage day. The $4^{\circ}C$ treatment showed the highest visual quality and the lowest off-odor and aerobic plate count. Therefore, it is necessary to establish a low-temperature distribution system which is controlled under $4^{\circ}C$, because the baby leaf beet's storability and microbial growth are effected even during a short time of 5 hrs during the distribution process.

계절에 따라 달라지는 수송 온도에 따른 어린잎 비트의 저장성을 알아보기 위해 어린잎 크기에서 수확한 비트잎을 $1,300cc{\cdot}m^{-2}{\cdot}day^{-1}{\cdot}atm^{-1}$의 OTR(oxygen transmission rate) 필름으로 포장하여 4가지 수송 온도 조건에서 18일간 저장하였다. 어린잎 비트를 계절별로 달라지는 수송 온도($-2^{\circ}C$, $4^{\circ}C$, $20^{\circ}C$, or $30^{\circ}C$)에서 5시간동안 보관한 후 $8^{\circ}C$에서 저장하면서 생체중 감소, 포장내 산소, 이산화탄소, 에틸렌 가스, 외관 품질, 이취, 그리고 총균수를 조사하였다. 생체중 감소는 모든 처리구가 MAP 포장상태였기 때문에 0.6% 이하였으며, 처리중에는 $4^{\circ}C$ 처리에서 가장 낮았다. 포장내 가스 조성은 수송 온도별 차이에 통계적 유의성은 없었으나, 산소는 $4^{\circ}C$ 처리구에서 18%로 가장 높았고 이산화탄소는 $30^{\circ}C$와 $-2^{\circ}C$에서 4% 수준으로 높았으며, 에틸렌는 저장 10일 이후 $-2^{\circ}C$에서 가장 높았다. 또한 저장 종료일의 경도와 외관은 $4^{\circ}C$ 처리구에서 가장 양호하였으며, 특히 이취와 총균수는 매우 낮았다. 따라서 어린잎 비트는 짧은 기간이지만 수송 온도가 균 발생과 저장성에 영향을 미치기 때문에 $4^{\circ}C$ 내외의 저온 유통체계 확립이 필요하다고 판단된다.

Keywords

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