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레이져 가공 OTR 필름 종류가 저장온도에 따른 몇 가지 엽채류의 MA 저장에 미치는 영향
정민재 ( M. J. Jeong ),최인이 ( I. L. Choi ),홍성미 ( S. M. Hong ),윤혁성 ( H. S. Yoon ),백준필 ( J. P. Ba ),강호민 ( H. M. Kang ) 강원대학교 농업생명과학연구원(구 농업과학연구소) 2014 강원 농업생명환경연구 Vol.26 No.2
These studies were conducted to find the effects of laser ablation OTR film types on MA package in perilla leaf, rape, pak choi and chicory sort of leaf vegetable. They were treated at two different temperature conditions and storage for 7 days, except the rape 25℃ treatment, which was stored for 5 days with four types of laser ablation film such as 3,000 cc, 5,000 cc, 7,000 cc and 10,000 cc/m2·day·atm films for perilla leaf and pak choi, 10,000 cc, 20,000 cc, 30,000 cc and 40,000 cc for rape, as 5,000 cc, 7,000 cc, 10,000 cc and 20,000 cc for chicory. In the all treatments, fresh weight loss rate was lower than 0.8% in 12℃, 1.6% in 25℃ except for the 10,000 cc film of perilla leaf. In the carbon dioxide contents, perilla leaf was maintained at the lowest in 12℃ and 25℃ for 10,000 cc, rape was maintained 3-4% in 30,000 cc and 40,000 cc at 12℃, and more than 6% in all film when finish stored at 25℃, pak choi was maintained about 5% except for the 3,000 cc film in 12℃, and chicory was showed average 3% that slightly higher at 12℃ in the 20,000 cc and increase more than 12% at 25℃ in all treat films. Ethylene content tended to be low with higher gas transmission film, but rape treated with the 10,000 cc and pak choi treated with the 3,000 cc film showed low content than average. It was considered that high carbon dioxide and low oxygen content inhibited ethylene occurrence. Rape was highly damaged by yellowing, but perilla leaf cleared. The 5,000 cc film at 12℃, 7,000 cc film at 25℃ for perilla leaf and the 10,000 cc film at 12, 25℃ for rape and 3,000 cc film at 12, 25℃ for pak choi and the 20,000 cc film at 12℃, 5,000 cc film at 25℃ for chicory had the best visual quality through panel test. In the off-flavor, the 7,000 cc film at 12, 25℃ for perilla leaf and 20,000 cc film at 12, 25℃ for rape and 7,000 cc film at 12℃, the 3,000 cc film at 25℃ for pak choi and 5,000 cc film at 12, 25℃ for chicory showed the best results. The conclusion was 5,000 cc and 10,000 cc films were the best film for MA storage at 12℃ and 25℃ in perilla leaf because it showed the best quality of visual quality and off-flavor. In the case of rape, 12℃ treatment was better than 25℃, and the 10,000 cc film showed the best results in carbon dioxide contents and off-flavor. In pak choi, the 3,000 cc film treatment was better than other films at off-flavor, carbon dioxide and visual quality for 12℃ MA storage, and the 10,000 cc film treatment was better than other films at off-flavor and visual quality. The 20,000 cc firm was the most reasonable treatment in both storage temperatures for chicory.
몇 가지 국화과 어린잎채소의 MAP에 적합한 OTR 필름 종류 구명
정민재 ( M. J. Jeong ),최인이 ( I. L. Choi ),윤혁성 ( H. S. Yoon ),백준필 ( J. P. Baek ),강호민 ( H. M. Kang ) 강원대학교 농업생명과학연구원(구 농업과학연구소) 2015 강원 농업생명환경연구 Vol.27 No.2
본 연구는 몇 가지 국화과 어린잎채소를 대상으로 OTR 필름을 이용한 MAP에 적합한 필름을 구명하기 위해 진행되었다. 로메인, 롤로로사, 그리고 엔디브의 어린 잎채소를 수확하여 8℃에서 저장하며 생체중 감소의 변화와 이산화탄소, 산소, 에틸렌 가스 농도 변화를 측정하고 저장 종료 후 엽록소 함량, 경도, 그리고 패널테스트를 통해 외관과 이취를 조사하였다. 세 작물 모두 생체중 감소는 OTR 필름 포장 처리구는 0.1% 이하로 매우 적었다. 포장 내 이산화탄소와 산소 농도는 엔디브, 에틸렌 가스농도는 롤로로사를 제외하고 투과도에 따른 일정한 경향을 보였다. 엔디브의 경우 10,000 cc 처리구가 다른 처리구에 비해 저장 종료일에 이산화탄소 농도가 8배, 롤로 로사는 20,000 cc 처리구가 저장 1일째 3배 가량 높았다. 저장 종료일의 로메인과 롤로로사는 각각 40,000 cc와 20,000 cc가 경도가 높고 외관상 품질이 우수하였고, 그리고 엔디브의 경우 10,000 cc가 엽록소 함량과 경도가 높고 외관상 품질이 우수하며 이취가 적었다. 이상의 결과로 로메인은 40,000 cc 필름, 롤로로사는 20,000 cc, 필름 그리고 엔디브는 10,000 cc 필름이 MA 저장에 적합하다고 판단되었다. These studies were conducted to identify the effects of laser ablation OTR (oxygen transmission rate) film on storability of several Compositae baby leaf (romaine, lollo rosa, and endive). Fresh weight loss rate of spinach was less than 0.1% in all OTR films at three different Compositae baby leaf vegetables except for the perforated film. All OTR films had lower carbon dioxide concentration than the optimum MA storage condition. Ethylene concentration was less than 8.0 μL/L in all OTR films at every treatments during storage. The 40,000 cc film was suitable for romaine with less ethylene concentration, and also shown higher results in hardness and visual quality than any other films. The 20,000 cc film had higher results of hardness and visual quality in lollo rosa. The 20,000 cc film was suitable for endive with less ethylene concentration and high score in visual quality and low off-flavor. Following these results, it comes to conclusion the suitable type of OTR film such as 40,000 cc, 20,000 cc, and 80,000 cc for MA storage in romaine, lollo rosa, and endive baby leaf vegetable.