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PCM을 장착한 열전소자 냉각시스템의 저장 중 피망의 품질 평가

Quality evaluations of bell pepper in cold system combined with TEM (thermoelectric materials) and PCM (phase change material)

  • 성정민 (한국식품연구원 스마트 유통시스템 연구단) ;
  • 김소희 (한국식품연구원 스마트 유통시스템 연구단) ;
  • 김병삼 (한국식품연구원 스마트 유통시스템 연구단) ;
  • 김종훈 (한국식품연구원 스마트 유통시스템 연구단) ;
  • 김지영 (한국식품연구원 스마트 유통시스템 연구단) ;
  • 권기현 (한국식품연구원 스마트 유통시스템 연구단)
  • Sung, Jung-Min (Smart Postharvest Technology Research Group, Korean Food Research Institute) ;
  • Kim, So-Hee (Smart Postharvest Technology Research Group, Korean Food Research Institute) ;
  • Kim, Byeong-Sam (Smart Postharvest Technology Research Group, Korean Food Research Institute) ;
  • Kim, Jong-Hoon (Smart Postharvest Technology Research Group, Korean Food Research Institute) ;
  • Kim, Ji-Young (Smart Postharvest Technology Research Group, Korean Food Research Institute) ;
  • Kwon, Ki-Hyun (Smart Postharvest Technology Research Group, Korean Food Research Institute)
  • 투고 : 2016.03.15
  • 심사 : 2016.05.27
  • 발행 : 2016.08.30

초록

본 연구에서는 신선식품의 품질유통 시스템 구축을 위하여 Peltier 효과를 기반으로 한 열전소자 배송시스템에 잠열재를 탑재한 이동식 저온 컨테이너를 농산물의 유통에 적용하고자 하였다. 실험 방법은 개발된 열전소자 배송시스템 및 개발잠열재를 이용한 이동식 저온 컨테이너에 저장 중 피망의 품질을 평가하여 대조구인 EPS 박스의 피망과 비교 평가하였다. 피망의 저장 중 품질측정 결과, 중량 감소량은 증가하였으나 수분함량은 저장기간동안 90.96~94.43% 수준을 유지하였다. 비타민 C 함량은 감소하는 경향을 나타내었으며 처리구(BPT-5, 10)의 경우 대조구(BPC)에 비해 감소율이 낮게 나타났다. 색도 측정 결과 ${\Delta}E$ 값은 저장기간동안 증가하였으며 21일 때 BPT-5의 ${\Delta}E$ 값은 5.05인데 반해 BPC의 값은 41.8로 크게 증가함을 알 수 있었다. 총균수 또한 저장 21일째 대조구에 비해 BPT-5 처리구가 약 1 log scale 낮은 수준을 나타내어 연구에서 개발한 수배송 용기가 품질 유지에 효과적인 것으로 판단된다. 전체적인 결과를 종합하였을 때, 본 연구를 위하여 개발된 이동식 저온 컨테이너가 피망의 저장성 증가에 효과가 있는 것으로 판단되었다. 하지만 이동식 저온 컨테이너의 개발은 초기단계이며 잠열재의 무게로 인해 하중부담이 크다는 단점을 보완하기 위해 더 많은 연구가 이루어져야 할 것이다.

과제정보

연구 과제번호 : 신선식품 유통을 위한 에너지 절약형 PCM(Phase change material) 적용 시스템

연구 과제 주관 기관 : 한국식품연구원

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