Changes of Storability and Quality Characteristics of 'Autumn Sense' Hardy Kiwifruit According to Ethylene Treatment and Storage Condition

This study was investigated the changes of storability and quality characteristics of 'Autumn Sense' hardy kiwifruit according to ethylene treatment and storage condition. In the results of investigation of changes in hardy kiwifruit quality during storage period, hardness of ethylene treated hardy kiwifruit during 48 and 96 hours was rapidly decreased, but soluble solid content was rapidly increased with the passing of storage period in all treatment groups. The total acid was estimated from 0.7 to 1.4% with storage period in all treatment groups. In the results of investigation of the weight loss rate, ethylene treated hardy kiwifruit during 48 hours was the highest 30.9% in storage at $20^{\circ}C$ and lowest 5.9% in storage at $2^{\circ}C$ with a relative air humidity of about 90% during storage at 24 days. Ethylene treated hardy kiwifruit during 96 hours was decrease 29.4% in storage at $20^{\circ}C$, 20.7% in storage at $4^{\circ}C$, 12.1% in storage at $2^{\circ}C$, and 6.0% in storage at $2^{\circ}C$ with a relative air humidity of about 90% during storage at 22 days. The taste of hardy kiwifruit during storage was reduced to increase in all treatment groups. Particularly, storage at $20^{\circ}C$ was rapidly reduced to increase in the early storage and storage at $2^{\circ}C$ with a relative air humidity of about 90% was decrease after storage at 18 days. The rotten rate during storage was increased in all treatment groups, storage at $20^{\circ}C$ was after storage at 2 days and storage at $2^{\circ}C$ with a relative air humidity of about 90% was rapidly increased after storage at 16 days. Thus, it can be recommended that storage at $2^{\circ}C$ with a relative air humidity of about 90% is good to maintain quality. Also, we will decide optimal storage condition and after-ripening time of 'Autumn Sense' hardy kiwifruit.

에틸렌 처리와 저장조건에 따른 '오텀센스' 다래의 저장성 및 품질특성 변화

본 연구는 에틸렌 처리와 저장조건에 따른 '오텀센스' 다래의 저장성과 품질 변화를 조사하기 위하여 수행하였다. 다래의 저장 중 품질변화를 관찰한 결과, 48시간과 96시간동안 에틸렌을 처리한 모든 처리구에서 경도는 저장기간이 경과함에 따라 급격히 감소하였으나, 당도는 급격히 증가하였다. 산도는 모든 처리구에서 0.7~1.4%수준으로 나타났다. 저장기간 동안 다래의 중량감소율을 조사한 결과, 48시간동안 에틸렌을 처리하고 저장한 다래는 저장 24일 동안 $20^{\circ}C$저장구에서 30.9%로 가장 높았으며, $2^{\circ}C$에 상대습도 90%저장구에서 5.9%로 가장 낮게 나타났다. 96시간동안 에틸렌을 처리하고 저장한 다래는 저장 22일 동안 $20^{\circ}C$저장구에서 29.4%, $4^{\circ}C$저장구에서 20.7%, $2^{\circ}C$저장구에서 12.1% 그리고 $2^{\circ}C$에 상대습도 90%저장구에서 6.0% 감소하였다. 저장기간 동안 다래의 식미는 모든 처리구에서 증가하다 감소하였다. 특히 $20^{\circ}C$저장구는 저장 초기에 급격히 증가하다 감소하였고, $2^{\circ}C$에 상대습도 90%저장구는 저장 18일 후에 감소하였다. 부패율은 모든 처리구에서 저장기간 동안 증가하였으며, $20^{\circ}C$저장구는 저장 2일 후, $2^{\circ}C$에 상대습도 90%저장구는 16일부터 급격히 증가하였다. 따라서, $2^{\circ}C$에 상대습도 90%의 저장조건이 다래의 품질을 유지하는데 효과적일 것으로 판단되며, '오텀센스' 다래의 적정 저장조건과 후숙시기를 판단할 수 있을 것이라 생각된다.