플라즈마-촉매 및 오존 처리에 의한‘홍로’사과 저장과정에서 발생되는 에틸렌 제거 연구
Removal of Ethylene Generated during Storage of ‘Hongro’ Apple using Plasma-catalytic and Ozone Treatment
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초록
본 연구는 플라즈마-촉매 및 오존 처리공정을 이용하여‘홍로’사과 저장과정에서 발생되는 에틸렌을 제거하고자 하였다.‘홍로’사과는 저장온도가 증가할수록 호흡속도가 빨라져 산소농도는 급격히감소하고 이산화탄소와 에틸렌 농도는 증가하였다. 특히, 저장온도 20℃에서 90시간 저장 후 산소가모두 소모되었으며, 이산화탄소 농도는 약 20%로 증가하였다. 플라즈마-촉매와 오존 처리는 에틸렌제거에 효과적인 것으로 나타났으나, 오존 처리의 경우 사과표면에 반점이 생기는 문제가 발생하였다.‘홍로’사과의 품질 분석결과 가용성 고형분과 산도는 무 처리군에서 다소 높게 나타났으며, 경도는 플라즈마-촉매 처리군와 오존 처리군에서 다소 높게 분석되었다. 하지만 유의적 차이는 나타내지않았다.
Abstract
In this study, the removal of ethylene generated during the ‘Hongro’ apples storage wasinvestigated using plasma-catalytic and ozone treatment. ‘Hongro’ apples was found that therespiration rate increased as increasing the temperature. Accordingly, the oxygen concentrationsreduced and the carbon dioxide and ethylene concentrations increased. Plasma-catalytic andozone treatment appeared to be effective for the removal of ethylene. However, in the case ofozone treatment, spots were observed on the apple surfaces. The changes in quality of 'Hongro'apples were evaluated in terms of soluble solids, titratable acidity and firmness. In general,these variables were almost similar under different storage conditions. Soluble solid and titratableacidity were measured to be slightly higher than those of the control. Also, the firmness wasslightly higher for the plasma-catalytic treatment and ozone treatment.
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